Electronic band structure of Ti2 O3 thin films studied by angle-resolved photoemission spectroscopy

Naoto Hasegawa, Kohei Yoshimatsu, Daisuke Shiga, Tatsuhiko Kanda, Satoru Miyazaki, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira

Physical Review B　105　(23)　2022/06/15

DOI： 10.1103/PhysRevB.105.235137 　

ISSN： 2469-9950

eISSN： 2469-9969

Resonant tunneling driven metal-insulator transition in double quantum-well structures of strongly correlated oxide Peer-reviewed

R. Yukawa, M. Kobayashi, T. Kanda, D. Shiga, K. Yoshimatsu, S. Ishibashi, M. Minohara, M. Kitamura, K. Horiba, A. F. Santander-Syro, H. Kumigashira

Nature Communications　12　(1)　7070　2021/12

DOI： 10.1038/s41467-021-27327-z 　

eISSN： 2041-1723

Electronic structure of SrTi1-x Vx O3 films studied by in situ photoemission spectroscopy: Screening for a transparent electrode material Peer-reviewed

Tatsuhiko Kanda, Daisuke Shiga, Ryu Yukawa, Naoto Hasegawa, Duy Khanh Nguyen, Xianglin Cheng, Ryosuke Tokunaga, Miho Kitamura, Koji Horiba, Kohei Yoshimatsu, Hiroshi Kumigashira

Physical Review B　104　(11)　2021/09/15

DOI： 10.1103/PhysRevB.104.115121 　

ISSN： 2469-9950

eISSN： 2469-9969

Metallic ground states of undoped Ti<inf>2</inf>O<inf>3</inf> films induced by elongated c-axis lattice constant

K. Yoshimatsu, N. Hasegawa, Y. Nambu, Y. Ishii, Y. Wakabayashi, H. Kumigashira

Scientific Reports　10　(1)　2020/12

DOI： 10.1038/s41598-020-79182-5 　

eISSN： 2045-2322

Thickness dependence of electronic structures in v O2 ultrathin films: Suppression of the cooperative Mott-Peierls transition Peer-reviewed

D. Shiga, B. E. Yang, N. Hasegawa, T. Kanda, R. Tokunaga, K. Yoshimatsu, R. Yukawa, M. Kitamura, K. Horiba, H. Kumigashira

Physical Review B　102　(11)　2020/09

DOI： 10.1103/PhysRevB.102.115114 　

ISSN： 2469-9950

eISSN： 2469-9969

Relationship between charge redistribution and ferromagnetism at the heterointerface between the perovskite oxides LaNi O3 and LaMn O3 Peer-reviewed

Miho Kitamura, Masaki Kobayashi, Enju Sakai, Makoto Minohara, Ryu Yukawa, Daisuke Shiga, Kenta Amemiya, Yosuke Nonaka, Goro Shibata, Atsushi Fujimori, Hiroshi Fujioka, Koji Horiba, Hiroshi Kumigashira

Physical Review B　10　(24)　245132　2019/12/19

DOI： 10.1103/PhysRevB.100.245132 　

ISSN： 2469-9950

eISSN： 2469-9969

Emergence of metallic monoclinic states of VO2 films induced by K deposition Peer-reviewed

Shiga, D., Minohara, M., Kitamura, M., Yukawa, R., Horiba, K., Kumigashira, H.

Physical Review B　99　(12)　2019

DOI： 10.1103/PhysRevB.99.125120 　

ISSN： 2469-9950

Metallic Quantum Well States in Artificial Structures of Strongly Correlated Oxide Peer-reviewed

K. Yoshimatsu, K. Horiba, H. Kumigashira, T. Yoshida, A. Fujimori, M. Oshima

SCIENCE　333　(6040)　319-322　2011/07

DOI： 10.1126/science.1205771 　

ISSN： 0036-8075

Room-temperature perpendicular-anisotropic ferrimagnet Co3Mo mediated by cobalt-kagome flat band

K. Ishida, K. Fujiwara, K. Nakazawa, T. Yamazaki, S. Souma, T. Seki, D. Shiga, H. Kumigashira, T. Sato, Y. Motome, A. Tsukazaki

Communications Materials　2026/03/16

DOI： 10.1038/s43246-026-01131-y 　

Surface hole-proton mixed conduction of Ti_0.99Sc_0.01O_2-δ thin film with anatase structure

Tomohiro Yabuki, Airi Maekawa, Reina Fujita, Rinna Kunishi, Ryota Morizane, Ko Yamaguchi, Daisuke Shiga, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　65　(3)　2026/02/16

DOI： 10.35848/1347-4065/ae3c1f 　

ISSN： 0021-4922

eISSN： 1347-4065

Oxide-ion conductivity of Ce_0.75Sm_0.25O_2-δ thin film and its resistive switching function at room temperature

Ryota Morizane, Michitaka Tsunoda, Tomohiro Yabuki, Ko Yamaguchi, Daisuke Shiga, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　65　(3)　2026/02/16

DOI： 10.35848/1347-4065/ae3c20 　

ISSN： 0021-4922

eISSN： 1347-4065

Charge-transfer-induced depth redistribution of surface spin states in the topological insulator Sb2Te3

Ryu Yukawa, Yuki Higuchi, Yuichiro Toichi, Ryota Itaya, Kyosuke Nomura, Miho Kitamura, Kenichi Ozawa, Hiroshi Kumigashira, Kazuyuki Sakamoto

PHYSICAL REVIEW B　113　(7)　2026/02/15

DOI： 10.1103/jf8w-95k3 　

ISSN： 2469-9950

eISSN： 2469-9969

Spin-degenerate bulk bands and topological surface states associated with Dirac nodal lines in RuO2

Takumi Osumi, Kunihiko Yamauchi, Seigo Souma, Shubhankar Paul, Asuka Honma, Kosuke Nakayama, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Chiara Bigi, Francois Bertran, Tamio Oguchi, Takashi Takahashi, Yoshiteru Maeno, Takafumi Sato

PHYSICAL REVIEW B　113　(8)　2026/02/10

DOI： 10.1103/wvs6-hqfv 　

ISSN： 2469-9950

eISSN： 2469-9969

Oxide Superionic Conductivity of a-Axis-Oriented Ce_0.75Sm_0.25O_2-δ Thin Film on Yttria-Stabilized Zirconia Substrate

Ryota Morizane, Riku Tabuchi, Daisuke Shiga, Hiroshi Kumigashira, Tohru Higuchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　95　(1)　2026/01/15

DOI： 10.7566/JPSJ.95.014706 　

ISSN： 0031-9015

eISSN： 1347-4073

Space Charge Layer Evolution in All-Solid-State Batteries Probed via Operando Kelvin Probe Force Microscopy and Nuclear Reaction Analysis

Chao Zhu, Shigeru Kobayashi, Yuki Sugisawa, Franjo Weber, Kun-Han Lin, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Kazunori Nishio, Ryota Shimizu, Daiichiro Sekiba, Taro Hitosugi, Rudiger Berger

ACS NANO　19　(45)　39062-39075　2025/11/18

DOI： 10.1021/acsnano.5c10125 　

ISSN： 1936-0851

eISSN： 1936-086X

Dirac-like band dispersion at the pyrite-type CuSe2 (100) surface revealed by soft x-ray angle-resolved photoemission spectroscopy

K. Fujinuma, D. Takegami, H. Honda, D. Shiga, H. Kumigashira, R. Higashinaka, T. D. Matsuda, Y. Aoki, M. Hedo, Y. Onuki, N. L. Saini, T. Mizokawa

PHYSICAL REVIEW B　112　(20)　2025/11/13

DOI： 10.1103/8dkc-mr3v 　

ISSN： 2469-9950

eISSN： 2469-9969

Oxidation-Induced Giant Resistivity Change Associated with Structural and Electronic Reconstruction in Layered Sr₃Cr₂O_7-δ Epitaxial Thin Films

Zhaochen Ma, Daichi Oka, Shintaro Fukuda, Daisuke Shiga, Koichi Harata, Hiroshi Kumigashira, Tomoteru Fukumura

CHEMISTRY OF MATERIALS　37　(19)　7603-7610　2025/10/14

DOI： 10.1021/acs.chemmater.5c00810 　

ISSN： 0897-4756

eISSN： 1520-5002

Mott insulating state of IrO6 honeycomb monolayer structured in ilmenite-type oxide superlattice

Masamichi Negishi, Kohei Fujiwara, Seong-Hoon Jang, Yi-Feng Zhao, Shun Sasano, Ryo Ishikawa, Naoya Shibata, Daisuke Shiga, Hiroshi Kumigashira, Yuto Nakamura, Hideo Kishida, Yukitoshi Motome, Atsushi Tsukazaki

PHYSICAL REVIEW MATERIALS　9　(8)　2025/08/12

DOI： 10.1103/gz4v-8mds 　

ISSN： 2475-9953

Strongly Correlated van der Waals Oxide: 2H-NbO₂

Aya Sato, Takuto Soma, Hiroshi Kumigashira, Kohei Yoshimatsu, Akira Ohtomo

ACS NANO　19　(29)　26592-26599　2025/07/29

DOI： 10.1021/acsnano.5c05513 　

ISSN： 1936-0851

eISSN： 1936-086X

Ferroelectricity and magnetic order at room temperature and electronic states of bismuth iron oxyfluoride thin films

Akiko Kamigaito, Mizuho Sano, Kei Shigematsu, Satoshi Demura, Hiroshi Kumigashira, Tsukasa Katayama, Yasushi Hirose, Akira Chikamatsu

JOURNAL OF APPLIED PHYSICS　137　(21)　2025/06/07

DOI： 10.1063/5.0263144 　

ISSN： 0021-8979

eISSN： 1089-7550

Out-of-phase plasmon excitations in the trilayer cuprate Bi2Sr2Ca2Cu3O10+δ

S. Nakata, M. Bejas, J. Okamoto, K. Yamamoto, D. Shiga, R. Takahashi, H. Y. Huang, H. Kumigashira, H. Wadati, J. Miyawaki, S. Ishida, H. Eisaki, A. Fujimori, A. Greco, H. Yamase, D. J. Huang, H. Suzuki

PHYSICAL REVIEW B　111　(16)　2025/04/21

DOI： 10.1103/PhysRevB.111.165141 　

ISSN： 2469-9950

eISSN： 2469-9969

Spin-valley coupling enhanced high-T_C ferromagnetism in a non-van der Waals monolayer Cr₂Se₃ on graphene

C. -W Chuang, T. Kawakami, K. Sugawara, K. Nakayama, S. Souma, M. Kitamura, K. Amemiya, K. Horiba, H. Kumigashira, G. Kremer, Y. Fagot-Revurat, D. Malterre, C. Bigi, F. Bertran, F. H. Chang, H. J. Lin, C. T. Chen, T. Takahashi, A. Chainani, T. Sato

NATURE COMMUNICATIONS　16　(1)　2025/04/18

DOI： 10.1038/s41467-025-58643-3 　

eISSN： 2041-1723

Non-destructive measurement of the charge transfer across LaMnO₃/SrTiO₃ interfaces

Shohei Miyagawa, Yuta Ishii, Masato Anada, Kazuki Nagai, Miho Kitamura, Hiroshi Kumigashira, Yusuke Wakabayashi

JOURNAL OF APPLIED PHYSICS　137　(12)　2025/03/28

DOI： 10.1063/5.0258175 　

ISSN： 0021-8979

eISSN： 1089-7550

Electronic Structure Dimensionality of the Quantum-Critical Ferromagnet YbNi4P2

J. Dai, A. Antezak, W. Broad, M. Thees, V. Zatko, R. L. Bouwmeester, F. Fortuna, P. Le Fevre, J. E. Rault, K. Horiba, D. V. Vyalikh, H. Kumigashira, K. Kliemt, S. Friedemann, C. Krellner, E. Frantzeskakis, A. F. Santander-Syro

PHYSICAL REVIEW LETTERS　134　(12)　2025/03/27

DOI： 10.1103/PhysRevLett.134.126401 　

ISSN： 0031-9007

eISSN： 1079-7114

Large Seebeck coefficient driven by "pudding mold" flat band in hole-doped CuRhO₂

Amitayush Jha Thakur, Maximilian Thees, Franck Fortuna, Emmanouil Frantzeskakis, Daisuke Shiga, Hiromichi Kuriyama, Minoru Nohara, Hidenori Takagi, Hiroshi Kumigashira, Andres F. Santander-Syro

PHYSICAL REVIEW MATERIALS　9　(3)　2025/03/24

DOI： 10.1103/PhysRevMaterials.9.L032401 　

ISSN： 2475-9953

High surface electron-proton mixed conduction at medium temperature of c-axis oriented BaCe_0.7Ru_0.1Y_0.2O_3-δ thin film

Naohiro Kaneda, Go Notake, Yicheng Wang, Riku Kaneko, Riku Tabuchi, Ryota Morizane, Daisuke Shiga, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　64　(2)　2025/02/01

DOI： 10.35848/1347-4065/adb297 　

ISSN： 0021-4922

eISSN： 1347-4065

Resistive control of b-axis oriented VO₂ thin film by lithium ions diffusion from LiCoO₂ buffer layer

Riku Kaneko, Taisei Yamada, Ryota Morizane, Naohiro Kaneda, Riku Tabuchi, Go Notake, Daisuke Shiga, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　64　(2)　2025/02/01

DOI： 10.35848/1347-4065/adaf1e 　

ISSN： 0021-4922

eISSN： 1347-4065

Rocksalt-type heavy rare earth monoxides TbO, DyO, and ErO exhibiting metallic electronic states and ferromagnetism

Satoshi Sasaki, Daichi Oka, Daisuke Shiga, Ryunosuke Takahashi, Suguru Nakata, Koichi Harata, Yuichi Yamasaki, Miho Kitamura, Hironori Nakao, Hiroki Wadati, Hiroshi Kumigashira, Tomoteru Fukumura

DALTON TRANSACTIONS　54　(4)　1521-1527　2025/01/21

DOI： 10.1039/d4dt03214d 　

ISSN： 1477-9226

eISSN： 1477-9234

Universal Waterfall Feature in Cuprate Superconductors: Evidence of a Momentum-Driven Crossover

Benjamin Bacq-Labreuil, Chafic Fawaz, Yuichi Okazaki, Yukiko Obata, Herve Cercellier, Patrick Le Fevre, Francois Bertran, David Santos-Cottin, Hajime Yamamoto, Ikuya Yamada, Masaki Azuma, Koji Horiba, Hiroshi Kumigashira, Matteo d'Astuto, Silke Biermann, Benjamin Lenz

PHYSICAL REVIEW LETTERS　134　(1)　2025/01/09

DOI： 10.1103/PhysRevLett.134.016502 　

ISSN： 0031-9007

eISSN： 1079-7114

Peculiar magnetotransport properties in epitaxially stabilized orthorhombic Ru³⁺ perovskite LaRuO<inf>3</inf> and NdRuO<inf>3</inf>

Lingfei Zhang, Takahiro C. Fujita, Yuuki Masutake, Minoru Kawamura, Taka Hisa Arima, Hiroshi Kumigashira, Masashi Tokunaga, Masashi Kawasaki

Communications Materials　5　(1)　2024/12

DOI： 10.1038/s43246-024-00470-y 　

eISSN： 2662-4443

Surface terminations control charge transfer from bulk to surface states in topological insulators

Keiki Fukumoto, Seunghee Lee, Shin Ichi Adachi, Yuta Suzuki, Koichi Kusakabe, Rikuto Yamamoto, Motoharu Kitatani, Kunio Ishida, Yoshinori Nakagawa, Michael Merkel, Daisuke Shiga, Hiroshi Kumigashira

Scientific Reports　14　(1)　2024/12

DOI： 10.1038/s41598-024-61172-6 　

eISSN： 2045-2322

Evolution of band structure in the kagome superconductor Cs(V1-xCrx)3Sb5: Toward universal understanding of charge density wave and superconducting phase diagrams

Shuto Suzuki, Takemi Kato, Yongkai Li, Kosuke Nakayama, Zhiwei Wang, Seigo Souma, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yugui Yao, Takafumi Sato

Physical Review B　110　(16)　2024/10/15

DOI： 10.1103/PhysRevB.110.165104 　

ISSN： 2469-9950

eISSN： 2469-9969

Ferromagnetism triggered by band tripling in ruthenate Sr4Ru3 O10

N. Watanabe, S. Souma, K. Nakayama, K. Yamauchi, J. F. Ribeiro, Y. Wang, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, T. Oguchi, Z. Q. Mao, Y. P. Chen, T. Sato

Physical Review B　110　(15)　2024/10/15

DOI： 10.1103/PhysRevB.110.155134 　

ISSN： 2469-9950

eISSN： 2469-9969

Epitaxial growth and band offsets of β -(ScxGa1− x)2O3 thin films grown on (100) β -Ga2O3 substrate

Kazuki Koreishi, Takuto Soma, Hiroshi Kumigashira, Akira Ohtomo

Applied Physics Letters　2024/10/07

DOI： 10.1063/5.0226675 　

Evolution of band structure in the kagome superconductor Cs(V1−xCrx)3Sb5 : Toward universal understanding of charge density wave and superconducting phase diagrams

Shuto Suzuki, Takemi Kato, Yongkai Li, Kosuke Nakayama, Zhiwei Wang, Seigo Souma, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yugui Yao, Takafumi Sato

Physical Review B　2024/10/01

DOI： 10.1103/PhysRevB.110.165104 　

Universal role of combined symmetry for the protection of the Dirac cone in antiferromagnetic topological insulators

Asuka Honma, Noriyuki Kabeya, Seigo Souma, Yongjian Wang, Kunihiko Yamauchi, Kosuke Nakayama, Daichi Takane, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Noriaki Kimura, Yoichi Ando, Takafumi Sato

Physical Review B　110　(11)　2024/09/26

DOI： 10.1103/physrevb.110.115152 　

ISSN： 2469-9950

eISSN： 2469-9969

Revisiting the chemical potential shift in La2−xSrxCuO4 by means of hard and soft x-ray photoemission spectroscopy Peer-reviewed

Minato Nagamoto, Daiki Ootsuki, Tatsuhiro Ishida, Naoya Tsutsumi, Yujeong Lee, Atsushi Fujimori, Akira Yasui, Hiroshi Kumigashira, Seiki Komiya, Yoichi Ando, Teppei Yoshida

Physical Review B　2024/09/26

DOI： 10.1103/PhysRevB.110.115150 　

Universal role of combined symmetry for the protection of the Dirac cone in antiferromagnetic topological insulators

Asuka Honma, Noriyuki Kabeya, Seigo Souma, Yongjian Wang, Kunihiko Yamauchi, Kosuke Nakayama, Daichi Takane, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Noriaki Kimura, Yoichi Ando, Takafumi Sato

Physical Review B　110　(11)　2024/09/15

DOI： 10.1103/PhysRevB.110.115152 　

ISSN： 2469-9950

eISSN： 2469-9969

Revisiting the chemical potential shift in La2-xSrxCuO4 by means of hard and soft x-ray photoemission spectroscopy

Minato Nagamoto, Daiki Ootsuki, Tatsuhiro Ishida, Naoya Tsutsumi, Yujeong Lee, Atsushi Fujimori, Akira Yasui, Hiroshi Kumigashira, Seiki Komiya, Yoichi Ando, Teppei Yoshida

Physical Review B　110　(11)　2024/09/15

DOI： 10.1103/PhysRevB.110.115150 　

ISSN： 2469-9950

eISSN： 2469-9969

Observation of edge states derived from topological helix chains

K. Nakayama, A. Tokuyama, K. Yamauchi, A. Moriya, T. Kato, K. Sugawara, S. Souma, M. Kitamura, K. Horiba, H. Kumigashira, T. Oguchi, T. Takahashi, K. Segawa, T. Sato

Nature　631　(8019)　54-59　2024/07/04

DOI： 10.1038/s41586-024-07484-z 　

ISSN： 0028-0836

eISSN： 1476-4687

Observation of edge states derived from topological helix chains

K. Nakayama, A. Tokuyama, K. Yamauchi, A. Moriya, T. Kato, K. Sugawara, S. Souma, M. Kitamura, K. Horiba, H. Kumigashira, T. Oguchi, T. Takahashi, K. Segawa, T. Sato

Nature　2024/06/05

DOI： 10.1038/s41586-024-07484-z 　

ISSN： 0028-0836

eISSN： 1476-4687

Surface terminations control charge transfer from bulk to surface states in topological insulators

Keiki Fukumoto, Seunghee Lee, Shin-ichi Adachi, Yuta Suzuki, Koichi Kusakabe, Rikuto Yamamoto, Motoharu Kitatani, Kunio Ishida, Yoshinori Nakagawa, Michael Merkel, Daisuke Shiga, Hiroshi Kumigashira

Scientific Reports　14　(1)　2024/05/08

DOI： 10.1038/s41598-024-61172-6 　

eISSN： 2045-2322

180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

S. Akatsuka, M. Sakano, T. Yamamoto, T. Nomoto, R. Arita, R. Murata, T. Sasagawa, K. Watanabe, T. Taniguchi, N. Mitsuishi, M. Kitamura, K. Horiba, K. Sugawara, S. Souma, T. Sato, H. Kumigashira, K. Shinokita, H. Wang, K. Matsuda, S. Masubuchi, T. Machida, K. Ishizaka

Physical Review Research　6　(2)　2024/04

DOI： 10.1103/PhysRevResearch.6.L022048 　

ISSN： 2643-1564

Peculiar magnetotransport properties in epitaxially stabilized orthorhombic Ru3+ perovskite LaRuO3 and NdRuO3

Lingfei Zhang, Takahiro C. Fujita, Yuuki Masutake, Minoru Kawamura, Taka-hisa Arima, Hiroshi Kumigashira, Masashi Tokunaga, Masashi Kawasaki

Communications Materials　2024/03/14

DOI： 10.1038/s43246-024-00470-y 　

Inverse-Perovskite Ba<inf>3</inf>BO (B = Si and Ge) as a High Performance Environmentally Benign Thermoelectric Material with Low Lattice Thermal Conductivity

Xinyi He, Shigeru Kimura, Takayoshi Katase, Terumasa Tadano, Satoru Matsuishi, Makoto Minohara, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya

Advanced Science　11　(10)　2024/03/13

DOI： 10.1002/advs.202307058 　

eISSN： 2198-3844

Temperature-induced structural and electronic phase transitions in λ -phase Ti3O5

K. Yoshimatsu, H. Nakao, H. Kumigashira

Physical Review Materials　2024/03/13

DOI： 10.1103/PhysRevMaterials.8.035002 　

Temperature-induced structural and electronic phase transitions in λ -phase T i3 O5

K. Yoshimatsu, H. Nakao, H. Kumigashira

Physical Review Materials　8　(3)　2024/03

DOI： 10.1103/PhysRevMaterials.8.035002 　

eISSN： 2475-9953

Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>TaTe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>

Natsuki Mitsuishi, Yusuke Sugita, Tomoki Akiba, Yuki Takahashi, Masato Sakano, Koji Horiba, Hiroshi Kumigashira, Hidefumi Takahashi, Shintaro Ishiwata, Yukitoshi Motome, Kyoko Ishizaka

Physical Review Research　6　(1)　2024/02/09

DOI： 10.1103/physrevresearch.6.013155 　

eISSN： 2643-1564

Electronic Properties of Chiral IrGe₄ Studied by Angle Resolved Photoemission Spectroscopy and Band Structure Calculation

Genki Hayashi, Taiki Shimaiwa, Mario Okawa, Naoki Nakamura, Ryuji Higashinaka, Tatsuma D. Matsuda, Yuji Aoki, Miho Kitamura, Daisuke Shiga, Hiroshi Kumigashira, Marek Kopciuszynski, Alexey Barinov, Naurang. L. Saini, Takashi Mizokawa

Journal of the Physical Society of Japan　93　(1)　2024/01/15

DOI： 10.7566/jpsj.93.014702 　

ISSN： 0031-9015

eISSN： 1347-4073

Unveiling the orbital-selective electronic band reconstruction through the structural phase transition in TaTe2

Natsuki Mitsuishi, Yusuke Sugita, Tomoki Akiba, Yuki Takahashi, Masato Sakano, Koji Horiba, Hiroshi Kumigashira, Hidefumi Takahashi, Shintaro Ishiwata, Yukitoshi Motome, Kyoko Ishizaka

Physical Review Research　6　(1)　2024/01

DOI： 10.1103/PhysRevResearch.6.013155 　

ISSN： 2643-1564

Inverse‐Perovskite Ba3BO (B = Si and Ge) as a High Performance Environmentally Benign Thermoelectric Material with Low Lattice Thermal Conductivity Peer-reviewed

Xinyi He, Shigeru Kimura, Takayoshi Katase, Terumasa Tadano, Satoru Matsuishi, Makoto Minohara, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya

Advanced Science　2307058　2023/12/25

DOI： 10.1002/advs.202307058 　

Quantization condition of strongly correlated electrons in oxide nanostructures

Tatsuhiko Kanda, Daisuke Shiga, Asato Wada, Ryotaro Hayasaka, Yuuki Masutake, Naoto Hasegawa, Miho Kitamura, Kohei Yoshimatsu, Hiroshi Kumigashira

Communications Materials　4　(1)　2023/12

DOI： 10.1038/s43246-023-00354-7 　

eISSN： 2662-4443

Berry curvature contributions of kagome-lattice fragments in amorphous Fe–Sn thin films

Kohei Fujiwara, Yasuyuki Kato, Hitoshi Abe, Shun Noguchi, Junichi Shiogai, Yasuhiro Niwa, Hiroshi Kumigashira, Yukitoshi Motome, Atsushi Tsukazaki

Nature Communications　14　(1)　2023/12

DOI： 10.1038/s41467-023-39112-1 　

eISSN： 2041-1723

Antiferromagnetic topological insulator with selectively gapped Dirac cones

A. Honma, D. Takane, S. Souma, K. Yamauchi, Y. Wang, K. Nakayama, K. Sugawara, M. Kitamura, K. Horiba, H. Kumigashira, K. Tanaka, T. K. Kim, C. Cacho, T. Oguchi, T. Takahashi, Yoichi Ando, T. Sato

Nature Communications　14　(1)　2023/12

DOI： 10.1038/s41467-023-42782-6 　

eISSN： 2041-1723

Two-dimensional heavy fermion in a monoatomic-layer Kondo lattice YbCu<inf>2</inf>

Takuto Nakamura, Hiroki Sugihara, Yitong Chen, Ryu Yukawa, Yoshiyuki Ohtsubo, Kiyohisa Tanaka, Miho Kitamura, Hiroshi Kumigashira, Shin ichi Kimura

Nature Communications　14　(1)　2023/12

DOI： 10.1038/s41467-023-43662-9 　

eISSN： 2041-1723

Two-dimensional heavy fermion in a monoatomic-layer Kondo lattice YbCu2

Takuto Nakamura, Hiroki Sugihara, Yitong Chen, Ryu Yukawa, Yoshiyuki Ohtsubo, Kiyohisa Tanaka, Miho Kitamura, Hiroshi Kumigashira, Shin-ichi Kimura

Nature Communications　14　(1)　2023/12/01

DOI： 10.1038/s41467-023-43662-9 　

eISSN： 2041-1723

Antiferromagnetic topological insulator with selectively gapped Dirac cones

A. Honma, D. Takane, S. Souma, K. Yamauchi, Y. Wang, K. Nakayama, K. Sugawara, M. Kitamura, K. Horiba, H. Kumigashira, K. Tanaka, T. K. Kim, C. Cacho, T. Oguchi, T. Takahashi, Yoichi Ando, T. Sato

Nature Communications　2023/11/17

DOI： 10.1038/s41467-023-42782-6 　

Switching of charge-density wave by carrier tuning in monolayer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">TiTe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>

Koki Yanagizawa, Katsuaki Sugawara, Tappei Kawakami, Ryuichi Ando, Ken Yaegashi, Kosuke Nakayama, Seigo Souma, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Takafumi Sato

Physical Review Materials　7　(10)　2023/10/18

DOI： 10.1103/physrevmaterials.7.104002 　

eISSN： 2475-9953

Large Perpendicular Magnetic Anisotropy Induced by an Intersite Charge Transfer in Strained EuVO<inf>2</inf>H Films

Morito Namba, Hiroshi Takatsu, Riho Mikita, Yao Sijia, Kantaro Murayama, Hao Bo Li, Ryo Terada, Cédric Tassel, Hiroki Ubukata, Masayuki Ochi, Regino Saez-Puche, Elias Palacios Latasa, Naoki Ishimatsu, Daisuke Shiga, Hiroshi Kumigashira, Katsuki Kinjo, Shunsaku Kitagawa, Kenji Ishida, Takahito Terashima, Koji Fujita, Takeaki Mashiko, Keiichi Yanagisawa, Koji Kimoto, Hiroshi Kageyama

Journal of the American Chemical Society　145　(40)　21807-21816　2023/10/11

DOI： 10.1021/jacs.3c04521 　

ISSN： 0002-7863

eISSN： 1520-5126

Large Perpendicular Magnetic Anisotropy Induced by an Intersite Charge Transfer in Strained EuVO2H Films

Morito Namba, Hiroshi Takatsu, Riho Mikita, Yao Sijia, Kantaro Murayama, Hao-Bo Li, Ryo Terada, Cédric Tassel, Hiroki Ubukata, Masayuki Ochi, Regino Saez-Puche, Elias Palacios Latasa, Naoki Ishimatsu, Daisuke Shiga, Hiroshi Kumigashira, Katsuki Kinjo, Shunsaku Kitagawa, Kenji Ishida, Takahito Terashima, Koji Fujita, Takeaki Mashiko, Keiichi Yanagisawa, Koji Kimoto, Hiroshi Kageyama

Journal of the American Chemical Society　2023/09/28

DOI： 10.1021/jacs.3c04521 　

Unusual surface states associated with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="script">PT</mml:mi></mml:math> -symmetry breaking and antiferromagnetic band folding in NdSb

Asuka Honma, Daichi Takane, Seigo Souma, Yongjian Wang, Kosuke Nakayama, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yoichi Ando, Takafumi Sato

Physical Review B　108　(11)　2023/09/11

DOI： 10.1103/physrevb.108.115118 　

ISSN： 2469-9950

eISSN： 2469-9969

Surface-termination-dependent electronic states in kagome superconductors A V3Sb5 (A= K, Rb, Cs) studied by micro-ARPES

Kato, T., Li, Y., Liu, M., Nakayama, K., Wang, Z., Souma, S., Kitamura, M., Horiba, K., Kumigashira, H., Takahashi, T., Yao, Y., Sato, T.

Physical Review B　107　(24)　2023/06/29

DOI： 10.1103/PhysRevB.107.245143 　

ISSN： 2469-9969 2469-9950

eISSN： 2469-9969

Berry curvature contributions of kagome-lattice fragments in amorphous Fe–Sn thin films

Kohei Fujiwara, Yasuyuki Kato, Hitoshi Abe, Shun Noguchi, Junichi Shiogai, Yasuhiro Niwa, Hiroshi Kumigashira, Yukitoshi Motome, Atsushi Tsukazaki

Nature Communications　14　(1)　2023/06/13

DOI： 10.1038/s41467-023-39112-1 　

eISSN： 2041-1723

Visualizing crystal twin boundaries of bismuth by high-spatial-resolution ARPES

Ayumi Moriya, Kosuke Nakayama, Tappei Kawakami, Kensaku Maeda, Atsuya Tokuyama, Seigo Souma, Chaoyu Chen, José Avila, Maria Carmen Asensio, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Kozo Fujiwara, Kouji Segawa, Takafumi Sato

Physical Review Research　5　(2)　2023/06/06

DOI： 10.1103/physrevresearch.5.023152 　

eISSN： 2643-1564

Oxygen on-site Coulomb energy in Pr1.3-xLa0.7CexCuO4 and Bi2Sr2CaCu2O8+δ and its relation with Heisenberg exchange Peer-reviewed

A. Chainani, M. Horio, C.-M. Cheng, D. Malterre, K. Sheshadri, M. Kobayashi, K. Horiba, H. Kumigashira, T. Mizokawa, M. Oura, M. Taguchi, Y. Mori, A. Takahashi, T. Konno, T. Ohgi, H. Sato, T. Adachi, Y. Koike, T. Mochiku, K. Hirata, S. Shin, M. K. Wu, A. Fujimori

Physical Review B　107　(19)　195152-1-195152-12　2023/05/30

DOI： 10.1103/physrevb.107.195152 　

ISSN： 2469-9950

eISSN： 2469-9969

Novel supercell compounds of layered Bi–Rh–O with p-type metallic conduction materialized as a thin film form

M. Ohno, T. C. Fujita, Y. Masutake, H. Kumigashira, M. Kawasaki

APL Materials　11　(5)　2023/05/01

DOI： 10.1063/5.0147646 　

eISSN： 2166-532X

Quantitative measurement of structural fluctuation at LaNiO3/LaAlO3 interfaces as a function of thickness

Nagai, K., Anada, M., Kowa, K., Kitamura, M., Kumigashira, H., Tajiri, H., Wakabayashi, Y.

Physical Review Materials　7　(4)　2023/04/26

DOI： 10.1103/PhysRevMaterials.7.043604 　

ISSN： 2475-9953

Direct Imaging of Band Structure for Powdered Rhombohedral Boron Monosulfide by Microfocused ARPES

Katsuaki Sugawara, Haruki Kusaka, Tappei Kawakami, Koki Yanagizawa, Asuka Honma, Seigo Souma, Kosuke Nakayama, Masashi Miyakawa, Takashi Taniguchi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Shin-ichi Orimo, Masayuki Toyoda, Susumu Saito, Takahiro Kondo, Takafumi Sato

Nano Letters　23　(5)　1673-1679　2023/02/27

DOI： 10.1021/acs.nanolett.2c04048 　

ISSN： 1530-6984

eISSN： 1530-6992

Half-Metallicity and Magnetic Anisotropy in Double-Perovskite GdBaCo₂O₆ Films Prepared via Topotactic Oxidation

Tsukasa Katayama, Shishin Mo, Akira Chikamatsu, Yuji Kurauchi, Hiroshi Kumigashira, Tetsuya Hasegawa

Chemistry of Materials　35　(3)　1295-1300　2023/01/18

DOI： 10.1021/acs.chemmater.2c03335 　

ISSN： 0897-4756

eISSN： 1520-5002

Surface valence transition in SmS by alkali metal adsorption

Takuto Nakamura, Toru Nakaya, Yoshiyuki Ohtsubo, Hiroki Sugihara, Kiyohisa Tanaka, Ryu Yukawa, Miho Kitamura, Hiroshi Kumigashira, Keiichiro Imura, Hiroyuki S. Suzuki, Noriaki K. Sato, Shin Ichi Kimura

Physical Review B　107　(4)　2023/01/15

DOI： 10.1103/PhysRevB.107.L041102 　

ISSN： 2469-9950

eISSN： 2469-9969

Thickness-dependent magnetotransport properties of rocksalt NdO epitaxial thin films: observation of a ferromagnetic phase far above the Curie temperature

Daichi Saito, Daichi Oka, Kenichi Kaminaga, Miho Kitamura, Daisuke SHIGA, Hiroshi Kumigashira, Tomoteru Fukumura

Journal of Materials Chemistry C　2023

DOI： 10.1039/d3tc02478d 　

ISSN： 2050-7526

eISSN： 2050-7534

Giant spin-to-charge conversion at an all-epitaxial single-crystal-oxide Rashba interface with a strongly correlated metal interlayer

Shingo Kaneta-Takada, Miho Kitamura, Shoma Arai, Takuma Arai, Ryo Okano, Le Duc Anh, Tatsuro Endo, Koji Horiba, Hiroshi Kumigashira, Masaki Kobayashi, Munetoshi Seki, Hitoshi Tabata, Masaaki Tanaka, Shinobu Ohya

Nature Communications　13　(1)　2022/12

DOI： 10.1038/s41467-022-33350-5 　

eISSN： 2041-1723

Electronic structure reconstruction by trimer formation in CsW2 O6 studied by x-ray photoelectron spectroscopy

R. Nakamura, D. Takegami, A. Melendez-Sans, L. H. Tjeng, M. Okawa, T. Miyoshino, N. L. Saini, M. Kitamura, D. Shiga, H. Kumigashira, M. Yoshimura, K. D. Tsuei, Y. Okamoto, T. Mizokawa

Physical Review B　106　(19)　2022/11/15

DOI： 10.1103/PhysRevB.106.195104 　

ISSN： 2469-9950

eISSN： 2469-9969

Fermiology and Origin of Tc Enhancement in a Kagome Superconductor Cs (V1-xNbx)3Sb5

Takemi Kato, Yongkai Li, Kosuke Nakayama, Zhiwei Wang, Seigo Souma, Fumihiko Matsui, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yugui Yao, Takafumi Sato

Physical Review Letters　129　(20)　2022/11/11

DOI： 10.1103/PhysRevLett.129.206402 　

ISSN： 0031-9007

eISSN： 1079-7114

Low-temperature-processable amorphous-oxide-semiconductor-based phosphors for durable light-emitting diodes Peer-reviewed

Keisuke Ide, Naoto Watanabe, Takayoshi Katase, Masato Sasase, Junghwan Kim, Shigenori Ueda, Koji Horiba, Hiroshi Kumigashira, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya

Applied Physics Letters　121　(19)　2022/11/07

DOI： 10.1063/5.0115384 　

ISSN： 0003-6951

Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: Angle-resolved photoemission study

Chien Wen Chuang, Seigo Souma, Ayumi Moriya, Kosuke Nakayama, Atsutoshi Ikeda, Mayo Kawaguchi, Keito Obata, Shanta Ranjan Saha, Hidemitsu Takahashi, Shunsaku Kitagawa, Kenji Ishida, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Shingo Yonezawa, Johnpierre Paglione, Yoshiteru Maeno, Takafumi Sato

Physical Review Materials　6　(10)　2022/10

DOI： 10.1103/PhysRevMaterials.6.104203 　

eISSN： 2475-9953

Signature of topological band crossing in ferromagnetic Cr1/3NbSe2 epitaxial thin film

Bruno Kenichi Saika, Satoshi Hamao, Yuki Majima, Xiang Huang, Hideki Matsuoka, Satoshi Yoshida, Miho Kitamura, Masato Sakano, Tatsuto Hatanaka, Takuya Nomoto, Motoaki Hirayama, Koji Horiba, Hiroshi Kumigashira, Ryotaro Arita, Yoshihiro Iwasa, Masaki Nakano, Kyoko Ishizaka

Physical Review Research　4　(4)　2022/10

DOI： 10.1103/PhysRevResearch.4.L042021 　

ISSN： 2643-1564

eISSN： 2643-1564

Polarity-dependent charge density wave in the kagome superconductor CsV3Sb5

Takemi Kato, Yongkai Li, Kosuke Nakayama, Zhiwei Wang, Seigo Souma, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Takafumi Sato

Physical Review B　106　(12)　2022/09/15

DOI： 10.1103/PhysRevB.106.L121112 　

ISSN： 2469-9950

eISSN： 2469-9969

Rocksalt CeO epitaxial thin film as a heavy-fermion system transiting from p -type metal to partially compensated n -type metal by 4f delocalization

Nobuto Abe, Daichi Oka, Kenichi Kaminaga, Daisuke Shiga, Daichi Saito, Taku Yamamoto, Noriaki Kimura, Hiroshi Kumigashira, Tomoteru Fukumura

Physical Review B　106　(12)　2022/09/15

DOI： 10.1103/PhysRevB.106.125106 　

ISSN： 2469-9950

eISSN： 2469-9969

Anomalously large spin-dependent electron correlation in the nearly half-metallic ferromagnet CoS2

Hirokazu Fujiwara, Kensei Terashima, Junya Otsuki, Nayuta Takemori, Harald O. Jeschke, Takanori Wakita, Yuko Yano, Wataru Hosoda, Noriyuki Kataoka, Atsushi Teruya, Masashi Kakihana, Masato Hedo, Takao Nakama, Yoshichika Ōnuki, Koichiro Yaji, Ayumi Harasawa, Kenta Kuroda, Shik Shin, Koji Horiba, Hiroshi Kumigashira, Yuji Muraoka, Takayoshi Yokoya

Physical Review B　106　(8)　2022/08/15

DOI： 10.1103/PhysRevB.106.085114 　

ISSN： 2469-9950

eISSN： 2469-9969

Surface proton conduction below 100 °c of Ce<inf>0.80</inf>Sm<inf>0.20</inf>O<inf>2-δ </inf>thin film with oxygen vacancies

Go Notake, Daiki Nishioka, Hideaki Murasawa, Makoto Takayanagi, Yoshiaki Fukushima, Hiroki Ito, Tomoasa Takada, Daisuke Shiga, Miho Kitamura, Hiroshi Kumigashira, Tohru Higuchi

Japanese Journal of Applied Physics　61　(SD)　2022/06

DOI： 10.35848/1347-4065/ac4feb 　

ISSN： 0021-4922

eISSN： 1347-4065

Development of magnetism in Fe-doped magnetic semiconductors: Resonant photoemission and x-ray magnetic circular dichroism studies of (Ga,Fe)As

Takahito Takeda, Shoya Sakamoto, Le Duc Anh, Yukiharu Takeda, Shin Ichi Fujimori, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Atsushi Fujimori, Masaaki Tanaka, Masaki Kobayashi

Physical Review B　105　(19)　2022/05/15

DOI： 10.1103/PhysRevB.105.195155 　

ISSN： 2469-9950

eISSN： 2469-9969

Intervalence charge transfer and charge transport in the spinel ferrite ferromagnetic semiconductor Ru-doped CoFe2 O4 Peer-reviewed

Masaki Kobayashi, Munetoshi Seki, Masahiro Suzuki, Ryo Okano, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Atsushi Fujimori, Masaaki Tanaka, Hitoshi Tabata

Physical Review B　105　(20)　205103-1-205103-6　2022/05/15

DOI： 10.1103/PhysRevB.105.205103 　

ISSN： 2469-9950

eISSN： 2469-9969

Design, Synthesis, and Optoelectronic Properties of the High-Purity Phase in Layered AETMN<inf>2</inf>(AE = Sr, Ba; TM = Ti, Zr, Hf) Semiconductors

Akihiro Shiraishi, Shigeru Kimura, Xinyi He, Naoto Watanabe, Takayoshi Katase, Keisuke Ide, Makoto Minohara, Kosuke Matsuzaki, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya

Inorganic Chemistry　61　(17)　6650-6659　2022/05/02

DOI： 10.1021/acs.inorgchem.2c00604 　

ISSN： 0020-1669

eISSN： 1520-510X

Enhancement of transparency in epitaxially-grown p-type SnO films by surface-passivation treatment in a Na<inf>2</inf>S aqueous solution

Suguri Uchida, Takuto Soma, Miho Kitamura, Hiroshi Kumigashira, Akira Ohtomo

Japanese Journal of Applied Physics　61　(5)　2022/05

DOI： 10.35848/1347-4065/ac56fa 　

ISSN： 0021-4922

eISSN： 1347-4065

High-Mobility Metastable Rock-Salt Type (Sn,Ca)Se Thin Film Stabilized by Direct Epitaxial Growth on a YSZ (111) Single-Crystal Substrate

Xinyi He, Jinshuai Chen, Takayoshi Katase, Makoto Minohara, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya

ACS Applied Materials and Interfaces　14　(16)　18682-18689　2022/04/14

DOI： 10.1021/acsami.2c01464 　

ISSN： 1944-8244

eISSN： 1944-8252

Photoinduced transient states of antiferromagnetic orderings in La<inf>1/3</inf>Sr<inf>2/3</inf>FeO<inf>3</inf>and SrFeO<inf>3- δ </inf>thin films observed through time-resolved resonant soft x-ray scattering

Kohei Yamamoto, Tomoyuki Tsuyama, Suguru Ito, Kou Takubo, Iwao Matsuda, Niko Pontius, Christian Schüßler-Langeheine, Makoto Minohara, Hiroshi Kumigashira, Yuichi Yamasaki, Hironori Nakao, Youichi Murakami, Takayoshi Katase, Toshio Kamiya, Hiroki Wadati

New Journal of Physics　24　(4)　2022/04

DOI： 10.1088/1367-2630/ac5f31 　

ISSN： 1367-2630

Crystal structure and electronic property modification of Ca2RuO4 thin films via fluorine doping

Shota Fukuma, Akira Chikamatsu, Tsukasa Katayama, Takahiro Maruyama, Keiichi Yanagisawa, Koji Kimoto, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Yasushi Hirose, Tetsuya Hasegawa

Physical Review Materials　6　(3)　2022/03/23

DOI： 10.1103/PhysRevMaterials.6.035002 　

ISSN： 2475-9953

eISSN： 2475-9953

Development of a versatile micro-focused angle-resolved photoemission spectroscopy system with Kirkpatrick-Baez mirror optics

Miho Kitamura, Seigo Souma, Asuka Honma, Daisuke Wakabayashi, Hirokazu Tanaka, Akio Toyoshima, Kenta Amemiya, Tappei Kawakami, Katsuaki Sugawara, Kosuke Nakayama, Kohei Yoshimatsu, Hiroshi Kumigashira, Takafumi Sato, Koji Horiba

Review of Scientific Instruments　93　(3)　2022/03/01

DOI： 10.1063/5.0074393 　

ISSN： 0034-6748

eISSN： 1089-7623

Two-dimensional superconductivity in single-band correlated 2H -type Nb O2 layers

Takuto Soma, Kohei Yoshimatsu, Koji Horiba, Hiroshi Kumigashira, Akira Ohtomo

Physical Review B　105　(10)　2022/03/01

DOI： 10.1103/PhysRevB.105.104504 　

ISSN： 2469-9950

eISSN： 2469-9969

Synthesis of High-Entropy Layered Oxide Epitaxial Thin Films: LiCr<inf>1/6</inf>Mn<inf>1/6</inf>Fe<inf>1/6</inf>Co<inf>1/6</inf>Ni<inf>1/6</inf>Cu<inf>1/6</inf>O<inf>2</inf>

Kaidong Wang, Kazunori Nishio, Koji Horiba, Miho Kitamura, Kurei Edamura, Daisuke Imazeki, Ryo Nakayama, Ryota Shimizu, Hiroshi Kumigashira, Taro Hitosugi

Crystal Growth and Design　22　(2)　1116-1122　2022/02/02

DOI： 10.1021/acs.cgd.1c01076 　

ISSN： 1528-7483

eISSN： 1528-7505

Direct Synthesis of Metastable λ-Phase Ti<inf>3</inf>O<inf>5</inf> Films on LaAlO<inf>3</inf>(110) Substrates at High Temperatures Peer-reviewed

Kohei Yoshimatsu, Hiroshi Kumigashira

Crystal Growth and Design　22　(1)　703-710　2022/01/05

DOI： 10.1021/acs.cgd.1c01214 　

ISSN： 1528-7483

eISSN： 1528-7505

Rocksalt-type PrO epitaxial thin film as a weak ferromagnetic Kondo lattice

Hirokazu Shimizu, Daichi Oka, Kenichi Kaminaga, Daichi Saito, Taku Yamamoto, Nobuto Abe, Noriaki Kimura, Daisuke Shiga, Hiroshi Kumigashira, Tomoteru Fukumura

Physical Review B　105　(1)　2022/01/01

DOI： 10.1103/PhysRevB.105.014442 　

ISSN： 2469-9950

eISSN： 2469-9969

Room-Temperature Preparation of Ta Ions-Containing Ionic Liquid and its Vapor Deposition toward Ta-Oxide Film Coating

Nana Hozuki, Kenichi Kaminaga, Shingo Maruyama, Daisuke Shiga, Hiroshi Kumigashira, Hidetaka Takato, Michio Kondo, Yuji Matsumoto

Journal of the Electrochemical Society　169　(1)　2022/01

DOI： 10.1149/1945-7111/ac48c5 　

ISSN： 0013-4651

eISSN： 1945-7111

Dirac semimetal phase and switching of band inversion in XMg<inf>2</inf>Bi<inf>2</inf> (X = Ba and Sr)

Daichi Takane, Yuya Kubota, Kosuke Nakayama, Tappei Kawakami, Kunihiko Yamauchi, Seigo Souma, Takemi Kato, Katsuaki Sugawara, Shin ichiro Ideta, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Kouji Segawa, Takafumi Sato

Scientific Reports　11　(1)　2021/12

DOI： 10.1038/s41598-021-01333-z 　

eISSN： 2045-2322

Superconducting gap and pseudogap in the surface states of the iron-based superconductor PrFeAsO1-y studied by angle-resolved photoemission spectroscopy

K. Hagiwara, M. Ishikado, M. Horio, K. Koshiishi, S. Nakata, S. Ideta, K. Tanaka, K. Horiba, K. Ono, H. Kumigashira, T. Yoshida, S. Ishida, H. Eisaki, S. Shamoto, A. Fujimori

Physical Review Research　3　(4)　2021/12

DOI： 10.1103/PhysRevResearch.3.043151 　

ISSN： 2643-1564

Large phonon drag thermopower boosted by massive electrons and phonon leaking in LaAlO<inf>3</inf>/LaNiO<inf>3</inf>/LaAlO<inf>3</inf>heterostructure

Masatoshi Kimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Jan M. Tomczak, Makoto Minohara, Ryotaro Aso, Hideto Yoshida, Keisuke Ide, Shigenori Ueda, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya

Nano Letters　21　(21)　9240-9246　2021/11/10

DOI： 10.1021/acs.nanolett.1c03143 　

ISSN： 1530-6984

eISSN： 1530-6992

Imaging the itinerant-to-localized transmutation of electrons across the metal-to-insulator transition in V<inf>2</inf>O<inf>3</inf>

Maximilian Thees, Min Han Lee, Rosa Luca Bouwmeester, Pedro H. Rezende-Gonçalves, Emma David, Alexandre Zimmers, Franck Fortuna, Emmanouil Frantzeskakis, Nicolas M. Vargas, Yoav Kalcheim, Patrick Le Fèvre, Koji Horiba, Hiroshi Kumigashira, Silke Biermann, Juan Trastoy, Marcelo J. Rozenberg, Ivan K. Schuller, Andrés F. Santander-Syro

Science Advances　7　(45)　2021/11

DOI： 10.1126/sciadv.abj1164 　

eISSN： 2375-2548

Epitaxial-Strain-Induced Spontaneous Magnetization in Polar Mn<inf>2</inf>Mo<inf>3</inf>O<inf>8</inf>

Shishin Mo, Tsukasa Katayama, Akira Chikamatsu, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tetsuya Hasegawa

Chemistry of Materials　33　(19)　7713-7718　2021/10/12

DOI： 10.1021/acs.chemmater.1c01877 　

ISSN： 0897-4756

eISSN： 1520-5002

Large magnetoresistance of a compensated metal Cu2Sb correlated with its Fermi surface topology

Mizuki Endo, Hideyuki Kawasoko, Seigo Soma, Kunihiko Yamauchi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Noriaki Kimura, Tamio Oguchi, Takafumi Sato, Tomoteru Fukumura

Physical Review Materials　5　(10)　2021/10/06

DOI： 10.1103/PhysRevMaterials.5.105002 　

eISSN： 2475-9953

Local polarization and valence distribution in LaNiO3 / LaMnO3 heterostructures

Masato Anada, Satoshi Sakaguchi, Kazuki Nagai, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Yusuke Wakabayashi

Physical Review B　104　(8)　2021/08/15

DOI： 10.1103/PhysRevB.104.085111 　

ISSN： 2469-9950

eISSN： 2469-9969

Bipolar Semiconducting Properties in α-SnWO<inf>4</inf>Based on the Characteristic Defect Structure

Makoto Minohara, Yuka Dobashi, Naoto Kikuchi, Akane Samizo, Kouhei Tsukuda, Keishi Nishio, Ko Mibu, Hiroshi Kumigashira, Izumi Hase, Yoshiyuki Yoshida, Yoshihiro Aiura

Inorganic Chemistry　60　(11)　8035-8041　2021/06/07

DOI： 10.1021/acs.inorgchem.1c00530 　

ISSN： 0020-1669

eISSN： 1520-510X

Electronic structure of 3°-twisted bilayer graphene on 4H-SiC(0001)

Takushi Iimori, Anton Visikovskiy, Hitoshi Imamura, Toshio Miyamachi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Kazuhiko Mase, Kan Nakatsuji, Satoru Tanaka, Fumio Komori

Physical Review Materials　5　(5)　2021/05/13

DOI： 10.1103/PhysRevMaterials.5.L051001 　

eISSN： 2475-9953

Total reflection hard x-ray photoelectron spectroscopy: Applications to strongly correlated electron systems

T. Mizutani, S. Tanaka, T. Saze, K. Fujii, H. Matsuoka, M. Nakano, H. Wadati, M. Kitamura, K. Horiba, Y. Iwasa, H. Kumigashira, M. Yoshiki, M. Taguchi

Physical Review B　103　(20)　2021/05/07

DOI： 10.1103/PhysRevB.103.205113 　

ISSN： 2469-9950

eISSN： 2469-9969

Extended superconducting dome revealed by angle-resolved photoemission spectroscopy of electron-doped cuprates prepared by the protect annealing method

C. Lin, T. Adachi, M. Horio, T. Ohgi, M. A. Baqiya, T. Kawamata, H. Sato, T. Sumura, K. Koshiishi, S. Nakata, G. Shibata, K. Hagiwara, M. Suzuki, K. Ono, K. Horiba, H. Kumigashira, S. Ideta, K. Tanaka, Y. Koike, A. Fujimori

Physical Review Research　3　(1)　2021/02/24

DOI： 10.1103/PhysRevResearch.3.013180 　

ISSN： 2643-1564

High-quality few-layer graphene on single-crystalline sic thin film grown on affordable wafer for device applications

Norifumi Endoh, Shoji Akiyama, Keiichiro Tashima, Kento Suwa, Takamasa Kamogawa, Roki Kohama, Kazutoshi Funakubo, Shigeru Konishi, Hiroshi Mogi, Minoru Kawahara, Makoto Kawai, Yoshihiro Kubota, Takuo Ohkochi, Masato Kotsugi, Koji Horiba, Hiroshi Kumigashira, Maki Suemitsu, Issei Watanabe, Hirokazu Fukidome

Nanomaterials　11　(2)　1-13　2021/02

DOI： 10.3390/nano11020392 　

eISSN： 2079-4991

Transport properties and electronic structure of fluorine-doped SnO<inf>2</inf> prepared by ultrasonic assisted mist deposition

Enju Sakai, Naoya Tsutsumi, Koji Horiba, Hiroshi Kumigashira, Yoshiko Tsuji

Journal of Electron Spectroscopy and Related Phenomena　247　2021/02

DOI： 10.1016/j.elspec.2020.147041 　

ISSN： 0368-2048

Surface electron-ion mixed conduction of BaTiO<inf>3−δ</inf> thin film with oxygen vacancies

Tomoasa Takada, Takeshi Fujita, Takehiro Imagawa, Emi Yamamoto, Jun Kano, Daisuke Shiga, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

Journal of the Physical Society of Japan　90　(1)　2021/01/15

DOI： 10.7566/JPSJ.90.014707 　

ISSN： 0031-9015

eISSN： 1347-4073

Artificially Designed Compositionally Graded Sr-Doped NaTaO<inf>3</inf>Single-Crystalline Thin Films and the Dynamics of Their Photoexcited Electron-Hole Pairs

Rio Konno, Shingo Maruyama, Takumu Kosaka, Ryuzi Katoh, Ryota Takahashi, Hiroshi Kumigashira, Nobuyuki Ichikuni, Hiroshi Onishi, Yuji Matsumoto

Chemistry of Materials　33　(1)　226-233　2021/01/12

DOI： 10.1021/acs.chemmater.0c03487 　

ISSN： 0897-4756

eISSN： 1520-5002

Investigation of the electronic states of A -site layer-ordered double perovskite YBaCo<inf>2</inf>O<inf>x</inf>(x = 5.3 and 6) thin films by x-ray spectroscopy

Akira Chikamatsu, Tsukasa Katayama, Takahiro Maruyama, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Hiroki Wadati, Tetsuya Hasegawa

Applied Physics Letters　118　(1)　2021/01/04

DOI： 10.1063/5.0031096 　

ISSN： 0003-6951

Switching of band inversion and topological surface states by charge density wave Peer-reviewed

N. Mitsuishi, Y. Sugita, M. S. Bahramy, M. Kamitani, T. Sonobe, M. Sakano, T. Shimojima, H. Takahashi, H. Sakai, K. Horiba, H. Kumigashira, K. Taguchi, K. Miyamoto, T. Okuda, S. Ishiwata, Y. Motome, K. Ishizaka

Nature Communications　11　(1)　2020/12/01

DOI： 10.1038/s41467-020-16290-w 　

eISSN： 2041-1723

Thickness-induced metal to insulator transition in Ru nanosheets probed by photoemission spectroscopy: Effects of disorder and Coulomb interaction Peer-reviewed

Daiki Ootsuki, Kenjiro Kodera, Daiya Shimonaka, Masashi Arita, Hirofumi Namatame, Masaki Taniguchi, Makoto Minohara, Koji Horiba, Hiroshi Kumigashira, Eiji Ikenaga, Akira Yasui, Yoshiharu Uchimoto, Satoshi Toyoda, Masahito Morita, Katsutoshi Fukuda, Teppei Yoshida

Scientific Reports　10　(1)　2020/12/01

DOI： 10.1038/s41598-020-58057-9 　

eISSN： 2045-2322

Polarity reversal of the charge carrier in tetragonal Ti Hx(x=1.6-2.0) at low temperatures

Ryota Shimizu, Yuki Sasahara, Ikutaro Hamada, Hiroyuki Oguchi, Shohei Ogura, Tetsuroh Shirasawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Shin Ichi Orimo, Katsuyuki Fukutani, Taro Hitosugi

Physical Review Research　2　(3)　2020/09/22

DOI： 10.1103/PhysRevResearch.2.033467 　

ISSN： 2643-1564

eISSN： 2643-1564

Hard and soft x-ray photoemission spectroscopy study of the new Kondo system SmO thin film

Shoya Sakamoto, Kenichi Kaminaga, Daichi Oka, Ryu Yukawa, Masafumi Horio, Yuichi Yokoyama, Kohei Yamamoto, Kou Takubo, Yosuke Nonaka, Keisuke Koshiishi, Masaki Kobayashi, Arata Tanaka, Akira Yasui, Eiji Ikenaga, Hiroki Wadati, Hiroshi Kumigashira, Tomoteru Fukumura, Atsushi Fujimori

Physical Review Materials　4　(9)　2020/09

DOI： 10.1103/PhysRevMaterials.4.095001 　

eISSN： 2475-9953

Molecular beam epitaxy growth of the highly conductive oxide SrMoO<inf>3</inf> Peer-reviewed

Hiroshi Takatsu, Naoya Yamashina, Daisuke Shiga, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, Takahito Terashima, Hiroshi Kageyama

Journal of Crystal Growth　543　125685-125685　2020/08/01

DOI： 10.1016/j.jcrysgro.2020.125685 　

ISSN： 0022-0248

Impact of the Crystal Orientation of Positive Electrodes on the Interface Resistance across a Solid Electrolyte and Electrode

Kazunori Nishio, Naoto Nakamura, Koji Horiba, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, Taro Hitosugi

ACS Applied Energy Materials　3　(7)　6416-6421　2020/07/27

DOI： 10.1021/acsaem.0c00644 　

eISSN： 2574-0962

Observation of inverted band structure in the topological Dirac semimetal candidate CaAuAs Peer-reviewed

Kosuke Nakayama, Zhiwei Wang, Daichi Takane, Seigo Souma, Yuya Kubota, Yuki Nakata, Cephise Cacho, Timur Kim, Sandy Adhitia Ekahana, Ming Shi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Yoichi Ando, Takafumi Sato

Physical Review B　102　(4)　2020/07/15

DOI： 10.1103/PhysRevB.102.041104 　

ISSN： 2469-9950

eISSN： 2469-9969

Influence of fluorination on electronic states and electron transport properties of Sr<inf>2</inf>IrO<inf>4</inf>thin films Peer-reviewed

Takahiro Maruyama, Akira Chikamatsu, Tsukasa Katayama, Kenta Kuramochi, Hiraku Ogino, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tetsuya Hasegawa

Journal of Materials Chemistry C　8　(24)　8268-8274　2020/06/28

DOI： 10.1039/d0tc01734e 　

ISSN： 2050-7534

eISSN： 2050-7526

Insulator-to-Metal Transition of Cr<inf>2</inf>O<inf>3</inf>Thin Films via Isovalent Ru³⁺Substitution International-journal Peer-reviewed

Kohei Fujiwara, Miho Kitamura, Daisuke Shiga, Yasuhiro Niwa, Koji Horiba, Tsutomu Nojima, Hiromichi Ohta, Hiroshi Kumigashira, Atsushi Tsukazaki

Chemistry of Materials　32　(12)　5272-5279　2020/06/23

DOI： 10.1021/acs.chemmater.0c01497 　

ISSN： 0897-4756

eISSN： 1520-5002

Electronic structure of a (3×3)-ordered silicon layer on Al(111)

Yusuke Sato, Yuki Fukaya, Mathis Cameau, Asish K. Kundu, Daisuke Shiga, Ryu Yukawa, Koji Horiba, Chin Hsuan Chen, Angus Huang, Horng Tay Jeng, Taisuke Ozaki, Hiroshi Kumigashira, Masahito Niibe, Iwao Matsuda

Physical Review Materials　4　(6)　2020/06

DOI： 10.1103/PhysRevMaterials.4.064005 　

eISSN： 2475-9953

Radial Spin Texture in Elemental Tellurium with Chiral Crystal Structure

M. Sakano, M. Hirayama, T. Takahashi, S. Akebi, M. Nakayama, K. Kuroda, K. Taguchi, T. Yoshikawa, K. Miyamoto, T. Okuda, K. Ono, H. Kumigashira, T. Ideue, Y. Iwasa, N. Mitsuishi, K. Ishizaka, S. Shin, T. Miyake, S. Murakami, T. Sasagawa, Takeshi Kondo

Physical Review Letters　124　(13)　2020/04

DOI： 10.1103/PhysRevLett.124.136404 　

ISSN： 0031-9007

eISSN： 1079-7114

Temperature Evolution of Magnetic Phases Near the Thickness-Dependent Metal–Insulator Transition in La1−xSrxMnO3 Thin Films Observed by XMCD

Goro Shibata, Kohei Yoshimatsu, Enju Sakai, Keisuke Ishigami, Shoya Sakamoto, Yosuke Nonaka, Fan-Hsiu Chang, Hong-Ji Lin, Di-Jing Huang, Chien-Te Chen, Hiroshi Kumigashira, Atsushi Fujimori

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)　2020/03/19

DOI： 10.7566/jpscp.30.011072 　

Anomalous Hall effect at the spontaneously electron-doped polar surface of PdCo O2 ultrathin films Peer-reviewed

T. Harada, K. Sugawara, K. Fujiwara, M. Kitamura, S. Ito, T. Nojima, K. Horiba, H. Kumigashira, T. Takahashi, T. Sato, A. Tsukazaki

Physical Review Research　2　(1)　013282　2020/03/09

DOI： 10.1103/PhysRevResearch.2.013282 　

ISSN： 2643-1564

eISSN： 2643-1564

Electronic properties of perovskite strontium chromium oxyfluoride epitaxial thin films fabricated via low-temperature topotactic reaction Peer-reviewed

Akira Chikamatsu, Takahiro Maruyama, Tsukasa Katayama, Yu Su, Yoshihiro Tsujimoto, Kazunari Yamaura, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tetsuya Hasegawa

Physical Review Materials　4　(2)　2020/02/18

DOI： 10.1103/PhysRevMaterials.4.025004 　

eISSN： 2475-9953

Tunable two-dimensional electron system at the (110) surface of SnO2 Peer-reviewed

J. Dai, E. Frantzeskakis, F. Fortuna, P. Lömker, R. Yukawa, M. Thees, S. Sengupta, P. Le Fèvre, F. Bertran, J. E. Rault, K. Horiba, M. Müller, H. Kumigashira, A. F. Santander-Syro

Physical Review B　101　(8)　2020/02/15

DOI： 10.1103/PhysRevB.101.085121 　

ISSN： 2469-9950

eISSN： 2469-9969

Low resistance at LiNi<inf>1/3</inf>Mn<inf>1/3</inf>Co<inf>1/3</inf>O<inf>2</inf> and Li<inf>3</inf>PO<inf>4</inf> interfaces Peer-reviewed

Kazunori Nishio, Naoto Nakamura, Koji Horiba, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, Taro Hitosugi

Applied Physics Letters　116　(5)　2020/02/03

DOI： 10.1063/1.5133879 　

ISSN： 0003-6951

Evolution of Electronic States and Emergence of Superconductivity in the Polar Semiconductor GeTe by Doping Valence-Skipping Indium Peer-reviewed

M. Kriener, M. Sakano, M. Kamitani, M. S. Bahramy, R. Yukawa, K. Horiba, H. Kumigashira, K. Ishizaka, Y. Tokura, Y. Taguchi

Physical Review Letters　124　(4)　2020/01/31

DOI： 10.1103/PhysRevLett.124.047002 　

ISSN： 0031-9007

eISSN： 1079-7114

Electronic structure of quasi-1D charge density wave material NbTe₄

Mitsuishi N., Chiba M., Sakano M., Horiba K., Kumigashira H., Sasagawa T., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　75.1　1270-1270　2020

DOI： 10.11316/jpsgaiyo.75.1.0_1270 　

eISSN： 2189-0803

Surface Proton Conduction of Sm-Doped CeO<inf>2-δ</inf> Thin Film Preferentially Grown on Al<inf>2</inf>O<inf>3</inf> (0001) Peer-reviewed

D. Nishioka, T. Tsuchiya, W. Namiki, M. Takayanagi, K. Kawamura, T. Fujita, R. Yukawa, K. Horiba, H. Kumigashira, T. Higuchi

Nanoscale Research Letters　15　(1)　2020

DOI： 10.1186/s11671-020-3267-5 　

ISSN： 1931-7573

eISSN： 1556-276X

Valence-bond insulator in proximity to excitonic instability Peer-reviewed

Y. Chiba, T. Mitsuoka, N. L. Saini, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, N. Katayama, H. Sawa, M. Nohara, Y. F. Lu, H. Takagi, T. Mizokawa

Physical Review B　10　(24)　2019/12/18

DOI： 10.1103/PhysRevB.100.245129 　

ISSN： 2469-9950

eISSN： 2469-9969

Non-trivial surface states of samarium hexaboride at the (111) surface Peer-reviewed

Yoshiyuki Ohtsubo, Yuki Yamashita, Kenta Hagiwara, Shin-ichiro Ideta, Kiyohisa Tanaka, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, Koji Miyamoto, Taichi Okuda, Wataru Hirano, Fumitoshi Iga, Shin-ichi Kimura

Nature Communications　10　(1)　2019/12

DOI： 10.1038/s41467-019-10353-3 　

ISSN： 2041-1723

eISSN： 2041-1723

Natural van der Waals heterostructural single crystals with both magnetic and topological properties Peer-reviewed

Wu, J., Liu, F., Sasase, M., Ienaga, K., Obata, Y., Yukawa, R., Horiba, K., Kumigashira, H., Okuma, S., Inoshita, T., Hosono, H.

Science Advances　5　(11)　eaax9989　2019/11

DOI： 10.1126/sciadv.aax9989 　

Temperature-dependent evolution of Ti 3d spectral features at surface of BaxTi8O16+delta Peer-reviewed

Dash S, Enomoto H, Kajita T, Ono K, Horiba K, Kobayashi M, Kumigashira H, Kandyba V, Giampietri A, Barinov A, Stramaglia F, Saini N. L, Katsufuji T, Mizokawa T

PHYSICAL REVIEW B　100　(12)　2019/09/24

DOI： 10.1103/PhysRevB.100.125153 　

ISSN： 2469-9950

eISSN： 2469-9969

Unusual change in the Dirac-cone energy band upon a two-step magnetic transition in CeBi Peer-reviewed

Oinuma, H., Souma, S., Nakayama, K., Horiba, K., Kumigashira, H., Yoshida, M., Ochiai, A., Takahashi, T., Sato, T.

Physical Review B　100　(12)　2019/09/10

DOI： 10.1103/PhysRevB.100.125122 　

ISSN： 2469-9950

Magnetic and electronic properties of B -site-ordered double-perovskite oxide La2CrMnO6 thin films Peer-reviewed

K. Yoshimatsu, J. Ishimaru, K. Watarai, K. Yamamoto, Y. Hirata, H. Wadati, Y. Takeda, K. Horiba, H. Kumigashira, O. Sakata, A. Ohtomo

Physical Review B　99　(23)　2019/06/13

DOI： 10.1103/physrevb.99.235129 　

ISSN： 2469-9950

eISSN： 2469-9969

Improved crystalline quality and electric conductivity in infinite-layer SrFeO<inf>2</inf> films through Sm substitution Peer-reviewed

Katayama, T., Chikamatsu, A., Kumigashira, H., Hasegawa, T.

Applied Physics Letters　114　(23)　2019/06/10

DOI： 10.1063/1.5097721 　

ISSN： 0003-6951

Evidence for bulk nodal loops and universality of Dirac-node arc surface states in ZrGeXc (Xc=S, Se, Te) Peer-reviewed

Nakamura, T., Souma, S., Wang, Z., Yamauchi, K., Takane, D., Oinuma, H., Nakayama, K., Horiba, K., Kumigashira, H., Oguchi, T., Takahashi, T., Ando, Y., Sato, T.

Physical Review B　99　(24)　2019/06/04

DOI： 10.1103/PhysRevB.99.245105 　

ISSN： 2469-9950

Surface electron–ion mixed conduction of Ti<inf>0.99</inf>Sc<inf>0.01</inf>O<inf>2−δ</inf> thin film with lattice distortion and oxygen vacancies Peer-reviewed

Kawamura, K., Sekine, M., Nishioka, D., Yukawa, R., Horiba, K., Kumigashira, H., Higuchi, T.

Journal of the Physical Society of Japan　88　(5)　2019/05/15

DOI： 10.7566/JPSJ.88.054711 　

ISSN： 0031-9015

Electronic structure of a monoatomic Cu2Si layer on a Si(111) substrate Peer-reviewed

Cameau M, Yukawa R, Chen C-H, Huang A, Ito S, Ishibiki R, Horiba K, Obata Y, Kondo T, Kumigashira H, Jeng H-T, D'angelo M, Matsuda I

PHYSICAL REVIEW MATERIALS　3　(4)　2019/04/24

DOI： 10.1103/PhysRevMaterials.3.044004 　

ISSN： 2475-9953

eISSN： 2475-9953

Coulomb-interaction effect on the two-dimensional electronic structure of the van der Waals ferromagnet Cr2Ge2Te6 Peer-reviewed

Suzuki M, Gao B, Koshiishi K, Nakata S, Hagiwara K, Lin C, Wan Y. X, Kumigashira H, Ono K, Kang Sungmo, Kang Seungjin, Yu J, Kobayashi M, Cheong S-W, Fujimoril A

PHYSICAL REVIEW B　99　(16)　2019/04/01

DOI： 10.1103/PhysRevB.99.161401 　

ISSN： 2469-9950

eISSN： 2469-9969

Bottom-current-collector-free thin-film batteries using LiNi<inf>0.8</inf>Co<inf>0.2</inf>O<inf>2</inf> epitaxial thin films Peer-reviewed

Kazunori Nishio, Koji Horiba, Naoto Nakamura, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, Taro Hitosugi

Journal of Power Sources　416　56-61　2019/03/15

DOI： 10.1016/j.jpowsour.2019.01.067 　

ISSN： 0378-7753

Inter-valence Charge Transfer in a Ru-doped Cobalt Ferrite CoFe₂O₄ Thin Film

KOBAYASHI MASAKI, SEKI MUNETOSHI, SUZUKI MASAHIRO, KITAMURA MIHO, FUJIMORI ATSUSHI, HORIBA KOJI, KUMIGASHIRA HIROSHI, TANAKA MASAAKI, TABATA HITOSHI

JSAP Annual Meetings Extended Abstracts　2019.1　2013-2013　2019/02/25

DOI： 10.11470/jsapmeeting.2019.1.0_2013 　

eISSN： 2436-7613

Observation of Chiral Fermions with a Large Topological Charge and Associated Fermi-Arc Surface States in CoSi Peer-reviewed

Takane, D., Wang, Z., Souma, S., Nakayama, K., Nakamura, T., Oinuma, H., Nakata, Y., Iwasawa, H., Cacho, C., Kim, T., Horiba, K., Kumigashira, H., Takahashi, T., Ando, Y., Sato, T.

Physical Review Letters　122　(7)　2019/02/20

DOI： 10.1103/PhysRevLett.122.076402 　

ISSN： 0031-9007

Growth and physical properties of Ce(O,F)Sb(S,Se)<inf>2</inf> single crystals with site-selected chalcogen atoms Peer-reviewed

Masanori Nagao, Masashi Tanaka, Akira Miura, Miho Kitamura, Koji Horiba, Satoshi Watauchi, Yoshihiko Takano, Hiroshi Kumigashira, Isao Tanaka

Solid State Communications　289　38-42　2019/02

DOI： 10.1016/j.ssc.2018.12.004 　

ISSN： 0038-1098

Electronic Structure of a Helimagnetic-Semiconductor AgCrSe₂ II

Kikuchi K., Yano R., Matsushita Y., Iwata J., Sakano M., Mitsuishi N., Shimojima T., Horiba K., Kumigashira H., Sasagawa T., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　74.1　2258-2258　2019

DOI： 10.11316/jpsgaiyo.74.1.0_2258 　

eISSN： 2189-0803

Electronic structure of TaTe₂ showing CDW transition with double zigzag chains to heptamers II

Mitsuishi N., Takahashi Y., Sugita Y., Akiba T., Sakano M., Yukawa R., Horiba K., Kumigashira H., Ishiwata S., Motome Y., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　74.1　2259-2259　2019

DOI： 10.11316/jpsgaiyo.74.1.0_2259 　

eISSN： 2189-0803

Electronic structures of misfit layered compounds (PbSe)_1.16(TiSe₂)_n (n = 2, 3)

Takahashi Kengo, Ueno Teppei, Shirata Masaharu, Araya Ituki, Horiba Koji, Kumigashira Hiroshi, Sakano Masato, Shimojima Takahiro, Kobayashi Kaya, Akimitsu Jun, Ishizaka Kyoko

Meeting Abstracts of the Physical Society of Japan　74.2　1951-1951　2019

DOI： 10.11316/jpsgaiyo.74.2.0_1951 　

eISSN： 2189-0803

Electronic Structure of BaIr₂Ge₇ Studied by Angle-resolve Photoemission Spectroscopy

Ishida T., Ootsuki D., Takasuka Y., Hishikawa A., Kitamura M., Horiba K., Kumigashira H., Ishida S., Iyo A., Eisaki H., Kawashima K., Yanagi Y., Yoshida T.

Meeting Abstracts of the Physical Society of Japan　74.2　1254-1254　2019

DOI： 10.11316/jpsgaiyo.74.2.0_1254 　

eISSN： 2189-0803

Valence-bond insulator in proximity to excitonic instability Peer-reviewed

Y. Chiba, T. Mitsuoka, N. L. Saini, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, N. Katayama, H. Sawa, M. Nohara, Y. F. Lu, H. Takagi, T. Mizokawa

Phys. Rev. B　100　(245129)　1-5　2019

Improvement of the hole mobility of SnO epitaxial films grown by pulsed laser deposition Peer-reviewed

Makoto Minohara, Naoto Kikuchi, Yoshiyuki Yoshida, Hiroshi Kumigashira, Yoshihiro Aiura

Journal of Materials Chemistry C　7　(21)　6332-6336　2019

DOI： 10.1039/C9TC01297D 　

ISSN： 2050-7526

In-gap state generated by La-on-Sr substitutional defects within the bulk of SrTiO3 Peer-reviewed

Yoshihiro Aiura, Kenichi Ozawa, Yasuhisa Tezuka, Makoto Minohara, Akane Samizo, Kyoko Bando, Hiroshi Kumigashira, Kazuhiko Mase

Physical Chemistry Chemical Physics　21　(27)　14646-14653　2019

DOI： 10.1039/C9CP02307K 　

ISSN： 1463-9076

Origins of Thermal Spin Depolarization in Half-Metallic Ferromagnet CrO2 Peer-reviewed

Fujiwara Hirokazu, Terashima Kensei, Sunagawa Masanori, Yano Yuko, Nagayama Takanobu, Fukura Tetsushi, Yoshii Fumiya, Matsuura Yuka, Ogata Makoto, Wakita Takanori, Yaji Koichiro, Harasawa Ayumi, Kuroda Kenta, Shin Shik, Horiba Koji, Kumigashira Hiroshi, Muraoka Yuji, Yokoya Takayoshi

PHYSICAL REVIEW LETTERS　121　(25)　2018/12/18

DOI： 10.1103/PhysRevLett.121.257201 　

ISSN： 0031-9007

eISSN： 1079-7114

Fermi surface topology in a metallic phase of VO<inf>2</inf> thin films grown on TiO<inf>2</inf>(001) substrates Peer-reviewed

Muraoka, Y., Nagao, H., Yao, Y., Wakita, T., Terashima, K., Yokoya, T., Kumigashira, H., Oshima, M.

Scientific Reports　8　(1)　2018/12/17

DOI： 10.1038/s41598-018-36281-8 　

ISSN： 2045-2322

Electronic properties across metal-insulator transition in β -pyrochlore-type CsW2 O6 epitaxial films Peer-reviewed

Soma, T., Yoshimatsu, K., Horiba, K., Kumigashira, H., Ohtomo, A.

Physical Review Materials　2　(11)　2018/11/27

DOI： 10.1103/PhysRevMaterials.2.115003 　

ISSN： 2475-9953

Anisotropic Charge Distribution Induced by Spin Polarization in La0.6Sr0.4MnO3 Thin Films Studied by X-ray Magnetic Linear Dichroism Peer-reviewed

Goro Shibata, Kohei Yoshimatsu, Keisuke Ishigami, Takayuki Harano, Yukio Takahashi, Shoya Sakamoto, Yosuke Nonaka, Toshiharu Kadono, Mitsuho Furuse, Schuichiro Fuchino, Makoto Okano, Jun-ichi Fujihira, Akira Uchida, Kazunori Watanabe, Hideyuki Fujihira, Seiichi Fujihira, Arata Tanaka, Hiroshi Kumigashira, Tsuneharu Koide, Atsushi Fujimori

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　87　(11)　2018/11

DOI： 10.7566/JPSJ.87.114713 　

ISSN： 0031-9015

Growth of antiperovskite oxide Ca3SnO films by pulsed laser deposition Peer-reviewed

Makoto Minohara, Ryu Yukawa, Miho Kitamura, Reiji Kumai, Youichi Murakami, Hiroshi Kumigashira

Journal of Crystal Growth　500　33-37　2018/10

DOI： 10.1016/j.jcrysgro.2018.08.014 　

ISSN： 0022-0248

Large anisotropy in conductivity of Ti<inf>2</inf>O<inf>3</inf> films Peer-reviewed

Yoshimatsu, K., Kurokawa, H., Horiba, K., Kumigashira, H., Ohtomo, A.

APL Materials　6　(10)　2018/10

DOI： 10.1063/1.5050823 　

ISSN： 2166-532X

Investigation of the electronic structure and lattice dynamics of the thermoelectric material Na-doped SnSe Peer-reviewed

Wu, P., Zhang, B., Peng, K.L., Hagihala, M., Ishikawa, Y., Kofu, M., Lee, S.H., Kumigashira, H., Hu, C.S., Qi, Z.M., Nakajima, K., Wang, G.Y., Sun, Z., Kamiyama, T.

Physical Review B　98　(9)　2018/09/20

DOI： 10.1103/PhysRevB.98.094305 　

ISSN： 2469-9950

Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)-(2 x 1) Peer-reviewed

Nakamura Takuto, Ohtsubo Yoshiyuki, Yamashita Yuki, Ideta Shin-ichiro, Tanaka Kiyohisa, Yaji Koichiro, Harasawa Ayumi, Shin Shik, Komori Fumio, Yukawa Ryu, Horiba Koji, Kumigashira Hiroshi, Kimura Shin-ichi

PHYSICAL REVIEW B　98　(7)　2018/08/27

DOI： 10.1103/PhysRevB.98.075431 　

ISSN： 2469-9950

eISSN： 2469-9969

Angle-resolved photoemission spectroscopy of the low-energy electronic structure of superconducting Pr2CuO4 driven by oxygen nonstoichiometry Peer-reviewed

Horio M, Krockenberger Y, Koshiishi K, Nakata S, Hagiwara K, Kobayashi M, Horiba K, Kumigashira H, Irie H, Yamamoto H, Fujimori A

PHYSICAL REVIEW B　98　(2)　2018/07/17

DOI： 10.1103/PhysRevB.98.020505 　

ISSN： 2469-9950

eISSN： 2469-9969

Observation of a Dirac nodal line in AlB2 Peer-reviewed

Takane, D., Souma, S., Nakayama, K., Nakamura, T., Oinuma, H., Hori, K., Horiba, K., Kumigashira, H., Kimura, N., Takahashi, T., Sato, T.

Physical Review B　98　(4)　2018/07/17

DOI： 10.1103/PhysRevB.98.041105 　

ISSN： 2469-9950

Spatial coherence of the insulating phase in quasi-two-dimensional LaNiO3 films Peer-reviewed

Masato Anada, Kazuhiro Kowa, Hiroki Maeda, Enju Sakai, Miho Kitamura, Hiroshi Kumigashira, Osami Sakata, Yoshinori Nakanishi-Ohno, Masato Okada, Tsuyoshi Kimura, Yusuke Wakabayashi

Physical Review B　98　(1)　2018/07/10

DOI： 10.1103/PhysRevB.98.014105 　

ISSN： 2469-9950

eISSN： 2469-9969

Band alignment at β -(AlxGa1-x)2O3/ β -Ga2O3 (100) interface fabricated by pulsed-laser deposition Peer-reviewed

Ryo Wakabayashi, Mai Hattori, Kohei Yoshimatsu, Koji Horiba, Hiroshi Kumigashira, Akira Ohtomo

Applied Physics Letters　112　(23)　2018/06/04

DOI： 10.1063/1.5027005 　

ISSN： 0003-6951

Element Selectivity in Second-Harmonic Generation of GaFeO3 by a Soft-X-Ray Free-Electron Laser Peer-reviewed

Sh. Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi, Y. Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K. Horiba, H. Yumoto, T. Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa, S. Yamamoto, M. Kotsugi, H. Wadati, H. Kumigashira, T. Arima, S. Shin, I. Matsuda

Physical Review Letters　120　(22)　2018/06/01

DOI： 10.1103/PhysRevLett.120.223902 　

ISSN： 1079-7114 0031-9007

eISSN： 1079-7114

High-density two-dimensional electron system induced by oxygen vacancies in ZnO Peer-reviewed

T. C. Rödel, J. Dai, F. Fortuna, E. Frantzeskakis, P. Le Fèvre, F. Bertran, M. Kobayashi, R. Yukawa, T. Mitsuhashi, M. Kitamura, K. Horiba, H. Kumigashira, A. F. Santander-Syro

Physical Review Materials　2　(5)　2018/05/14

DOI： 10.1103/PhysRevMaterials.2.051601 　

ISSN： 2475-9953

eISSN： 2475-9953

Surface electronic structure of SmB6(111) Peer-reviewed

Yoshiyuki Ohtsubo, Kenta Hagiwara, Chengwei Wang, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, Wataru Hirano, Fumitoshi Iga, Shin-ichi Kimura

Physica B: Condensed Matter　536　75-77　2018/05/01

DOI： 10.1016/j.physb.2017.09.033 　

ISSN： 0921-4526

Converting topological insulators into topological metals within the tetradymite family Peer-reviewed

K. W. Chen, N. Aryal, J. Dai, D. Graf, S. Zhang, S. Das, P. Le Fèvre, F. Bertran, R. Yukawa, K. Horiba, H. Kumigashira, E. Frantzeskakis, F. Fortuna, L. Balicas, A. F. Santander-Syro, E. Manousakis, R. E. Baumbach

Physical Review B　97　(16)　2018/04/09

DOI： 10.1103/PhysRevB.97.165112 　

ISSN： 2469-9969 2469-9950

Peculiar bonding associated with atomic doping and hidden honeycombs in borophene Peer-reviewed

Chi-Cheng Lee, Baojie Feng, Marie D'Angelo, Ryu Yukawa, Ro-Ya Liu, Takahiro Kondo, Hiroshi Kumigashira, Iwao Matsuda, Taisuke Ozaki

Physical Review B　97　(7)　2018/02/20

DOI： 10.1103/PhysRevB.97.075430 　

ISSN： 2469-9969 2469-9950

eISSN： 2469-9969

Electronic structure of layered ferromagnetic V_1/3NbS₂ studied by ARPES and DFT calculation

Yoshida S., Matsushita Y., Iwata J., Gen M., Sakano M., Shimojima T., Horiba K., Ono K., Kumigashira H., Nagatsuru Y., Kousaka Y., Inoue K., Akimitsu J., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　73.1　2267-2267　2018

DOI： 10.11316/jpsgaiyo.73.1.0_2267 　

eISSN： 2189-0803

Electronic structures of vanadium selenide epitaxial thin films from ARPES

Yoshida S., Nakano M., Bahramy M. S., Wang Y., Ohigashi Y., Sakano M., Matsuoka H., Majima Y., Kashiwabara Y., Yukawa R., Horiba K., Kumigashira H., Iwasa Y., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　73.2　824-824　2018

DOI： 10.11316/jpsgaiyo.73.2.0_824 　

eISSN： 2189-0803

Electronic Structure of a Helimagnetic-Semiconductor AgCrSe₂

Kikuchi K., Yano R., Sakano M., Mitsuishi N., Shimojima T., Horiba K., Kumigashira H., Sasagawa T., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　73.1　2266-2266　2018

DOI： 10.11316/jpsgaiyo.73.1.0_2266 　

eISSN： 2189-0803

Electronic structure of TaTe₂ showing CDW transition with double zigzag chains to heptamers

Mitsuishi N., Sugita Y., Akiba T., Sakano M., Horiba K., Kumigashira H., Ishiwata S., Motome Y., Ishizaka K.

Meeting Abstracts of the Physical Society of Japan　73.2　1650-1650　2018

DOI： 10.11316/jpsgaiyo.73.2.0_1650 　

eISSN： 2189-0803

Superconducting gap and pseudogap in the surface states of PrFeAsO_1-y observed by angle-resolved photoemission spectroscopy

Hagiwara K, Horio M, Koshiishi K, Nakata S, Lin C, Wan Y, Suzuki M, Ishikado M, Ishida S, Eisaki H, Shamoto S, Ideta S, Tanaka K, Horiba K, Ono K, Kumigashira H, Yoshida T, Fujimori A

Meeting Abstracts of the Physical Society of Japan　73.1　2213-2213　2018

DOI： 10.11316/jpsgaiyo.73.1.0_2213 　

eISSN： 2189-0803

ARPES study of the electronic state in Te-annealed FeTe_1-xSe_x

Koshiishi K., Otsuka T., Nakata S., Hagiwara K., Lin C., Wan Y., Suzuki M., Ono K., Horiba K., Kumigashira H., Ideta S., Tanaka K., Watanabe T., Fujimori A.

Meeting Abstracts of the Physical Society of Japan　73.2　1380-1380　2018

DOI： 10.11316/jpsgaiyo.73.2.0_1380 　

eISSN： 2189-0803

Direct observation of double valence-band extrema and anisotropic effective masses of the thermoelectric material SnSe Peer-reviewed

Takanobu Nagayama, Kensei Terashima, Takanori Wakita, Hirokazu Fujiwara, Tetsushi Fukura, Yuko Yano, Kanta Ono, Hiroshi Kumigashira, Osamu Ogiso, Aichi Yamashita, Yoshihiko Takano, Hitoshi Mori, Hidetomo Usui, Masayuki Ochi, Kazuhiko Kuroki, Yuji Muraoka, Takayoshi Yokoya

JAPANESE JOURNAL OF APPLIED PHYSICS　57　(1)　2018/01

DOI： 10.7567/JJAP.57.010301 　

ISSN： 0021-4922

eISSN： 1347-4065

Anisotropic spin-density distribution and magnetic anisotropy of strained La1-xSrxMnO3 thin films: angle-dependent x-ray magnetic circular dichroism Peer-reviewed

Shibata, Goro, Kitamura, Miho, Minohara, Makoto, Yoshimatsu, Kohei, Kadono, Toshiharu, Ishigami, Keisuke, Harano, Takayuki, Takahashi, Yukio, Sakamoto, Shoya, Nonaka, Yosuke, Ikeda, Keisuke, Chi, Zhendong, Furuse, Mitsuho, Fuchino, Shuichiro, Okano, Makoto, Fujihira, Jun-ichi, Uchida, Akira, Watanabe, Kazunori, Fujihira, Hideyuki, Fujihira, Seiichi, Tanaka, Arata, Kumigashira, Hiroshi, Koide, Tsuneharu, Fujimori, Atsushi

Npj Quantum Materials　3　2018

DOI： 10.1038/s41535-018-0077-4 　

ISSN： 2397-4648

Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs Peer-reviewed

Daichi Takane, Kosuke Nakayama, Seigo Souma, Taichi Wada, Yoshihiko Okamoto, Koshi Takenaka, Youichi Yamakawa, Ai Yamakage, Taichi Mitsuhashi, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Takafumi Sato

NPJ QUANTUM MATERIALS　3　2018/01

DOI： 10.1038/s41535-017-0074-z 　

ISSN： 2397-4648

eISSN： 2397-4648

Observation of a pseudogap in the vicinity of the metal–insulator transition in the perovskite-type vanadium oxides Nd<inf>1−x</inf>Sr<inf>x</inf>VO<inf>3</inf> Peer-reviewed

Shintaro Yamamoto, Daiki Ootsuki, Daiya Shimonaka, Daisuke Shibata, Kenjiro Kodera, Mario Okawa, Tomohiko Saitoh, Masafumi Horio, Atsushi Fujimori, Hiroshi Kumigashira, Kanta Ono, Eiji Ikenaga, Shigeki Miyasaka, Setsuko Tajima, Teppei Yoshida

Journal of the Physical Society of Japan　87　(2)　2018

DOI： 10.7566/JPSJ.87.024708 　

ISSN： 0031-9015

eISSN： 1347-4073

Thickness dependence and dimensionality effects on charge and magnetic orderings in La1/3Sr2/3FeO3 thin films Peer-reviewed

Yamamoto, K., Hirata, Y., Horio, M., Yokoyama, Y., Takubo, K., Minohara, M., Kumigashira, H., Yamasaki, Y., Nakao, H., Murakami, Y., Fujimori, A., Wadati, H.

Physical Review B　97　(7)　2018

DOI： 10.1103/PhysRevB.97.075134 　

ISSN： 2469-9950

Unexpected metal-insulator transition in thick Ca1-xSrxVO3 film on SrTiO3 (100) single crystal Peer-reviewed

Takayanagi, Makoto, Tsuchiya, Takashi, Namiki, Wataru, Ueda, Shigenori, Minohara, Makoto, Horiba, Koji, Kumigashira, Hiroshi, Terabe, Kazuya, Higuchi, Tohru

Applied Physics Letters　112　(13)　2018

DOI： 10.1063/1.5021618 　

ISSN： 0003-6951

Control of two-dimensional electronic states at anatase TiO2 (001) surface by K adsorption Peer-reviewed

Yukawa, R., Minohara, M., Shiga, D., Kitamura, M., Mitsuhashi, T., Kobayashi, M., Horiba, K., Kumigashira, H.

Physical Review B　97　(16)　2018

DOI： 10.1103/PhysRevB.97.165428 　

ISSN： 2469-9950

Ferromagnetism with strong magnetocrystalline anisotropy in A-site ordered perovskite YBaCo<inf>2</inf>O<inf>6</inf> epitaxial thin films prepared: Via wet-chemical topotactic oxidation Peer-reviewed

Katayama, T., Chikamatsu, A., Hirose, Y., Minohara, M., Kumigashira, H., Harayama, I., Sekiba, D., Hasegawa, T.

Journal of Materials Chemistry C　6　(13)　3445-3450　2018

DOI： 10.1039/c7tc05422j 　

ISSN： 2050-7526

Spectroscopic and theoretical investigation of the electronic states of layered perovskite oxyfluoride Sr2RuO3F2 thin films Peer-reviewed

Chikamatsu, Akira, Kurauchi, Yuji, Kawahara, Keisuke, Onozuka, Tomoya, Minohara, Makoto, Kumigashira, Hiroshi, Ikenaga, Eiji, Hasegawa, Tetsuya

Physical Review B　97　(23)　2018

DOI： 10.1103/PhysRevB.97.235101 　

ISSN： 2469-9950

Evidence for magnetic Weyl fermions in a correlated metal Peer-reviewed

K. Kuroda, T. Tomita, M. -T. Suzuki, C. Bareille, A. A. Nugroho, P. Goswami, M. Ochi, M. Ikhlas, M. Nakayama, S. Akebi, R. Noguchi, R. Ishii, N. Inami, K. Ono, H. Kumigashira, A. Varykhalov, T. Muro, T. Koretsune, R. Arita, S. Shin, Takeshi Kondo, S. Nakatsuji

NATURE MATERIALS　16　(11)　1090-+　2017/11

DOI： 10.1038/NMAT4987 　

ISSN： 1476-1122

eISSN： 1476-4660

ARPES studies of the inverse perovskite Ca3PbO: Experimental confirmation of a candidate 3D Dirac fermion system Peer-reviewed

Yukiko Obata, Ryu Yukawa, Koji Horiba, Hiroshi Kumigashira, Yoshitake Toda, Satoru Matsuishi, Hideo Hosono

PHYSICAL REVIEW B　96　(15)　2017/10

DOI： 10.1103/PhysRevB.96.155109 　

ISSN： 2469-9950

eISSN： 2469-9969

Electronic structure and polar catastrophe at the surface of LixCoO2 studied by angle-resolved photoemission spectroscopy Peer-reviewed

Y. Okamoto, R. Matsumoto, T. Yagihara, C. Iwai, K. Miyoshi, J. Takeuchi, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, N. L. Saini, T. Mizokawa

PHYSICAL REVIEW B　96　(12)　2017/09

DOI： 10.1103/PhysRevB.96.125147 　

ISSN： 2469-9950

eISSN： 2469-9969

Highly oriented epitaxial CaFe2O4 thin films on TiO2 substrates grown by pulsed-laser deposition Peer-reviewed

Nana Nishiyama, Hisanori Mashiko, Kohei Yoshimatsu, Koji Horiba, Hiroshi Kumigashira, Akira Ohtomo

THIN SOLID FILMS　638　406-409　2017/09

DOI： 10.1016/j.tsf.2017.08.003 　

ISSN： 0040-6090

Electronic Structures and Photoanodic Properties of Ilmenite-type MTiO3 Epitaxial Films (M = Mn, Fe, Co, Ni) Peer-reviewed

K. Yoshimatsu, H. Mashiko, N. Umezawa, K. Horiba, H. Kumigashira, A. Ohtomo

Journal of Physical Chemistry C　121　(34)　18717-18724　2017/08/31

DOI： 10.1021/acs.jpcc.7b06076 　

ISSN： 1932-7455 1932-7447

Oxide Ion Conduction of BaCe0.80Zr0.10Y0.10O3-δ Thin Film with Oxygen Vacancies Peer-reviewed

Masanori Ochi, Nobuaki Miyakawa, Makoto Minohara, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN　42　(4)　97-100　2017/08

DOI： 10.14723/tmrsj.42.97 　

Quasiparticle Interference on Cubic Perovskite Oxide Surfaces Peer-reviewed

Yoshinori Okada, Shiue-Yuan Shiau, Tay-Rong Chang, Guoqing Chang, Masaki Kobayashi, Ryota Shimizu, Horng-Tay Jeng, Susumu Shiraki, Hiroshi Kumigashira, Arun Bansil, Hsin Lin, Taro Hitosugi

PHYSICAL REVIEW LETTERS　119　(8)　2017/08

DOI： 10.1103/PhysRevLett.119.086801 　

ISSN： 0031-9007

eISSN： 1079-7114

Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2C Peer-reviewed

Koji Horiba, Ryu Yukawa, Taichi Mitsuhashi, Miho Kitamura, Takeshi Inoshita, Noriaki Hamada, Shigeki Otani, Naoki Ohashi, Sachiko Maki, Jun-ichi Yamaura, Hideo Hosono, Youichi Murakami, Hiroshi Kumigashira

PHYSICAL REVIEW B　96　(4)　2017/07

DOI： 10.1103/PhysRevB.96.045101 　

ISSN： 2469-9950

eISSN： 2469-9969

Three-dimensional band structure of LaSb and CeSb: Absence of band inversion Peer-reviewed

H. Oinuma, S. Souma, D. Takane, T. Nakamura, K. Nakayama, T. Mitsuhashi, K. Horiba, H. Kumigashira, M. Yoshida, A. Ochiai, T. Takahashi, T. Sato

PHYSICAL REVIEW B　96　(4)　2017/07

DOI： 10.1103/PhysRevB.96.041120 　

ISSN： 2469-9950

eISSN： 2469-9969

Orbital-Dependent Band Renormalization in BaNi2(As1-xPx)(2) (x=0.00 and 0.092) Peer-reviewed

Tomohiro Noda, Kazutaka Kudo, Masaya Takasuga, Minoru Nohara, Takuya Sugimoto, Daiki Ootsuki, Masaki Kobayashi, Koji Horiba, Kanta Ono, Hiroshi Kumigashira, Atsushi Fujimori, Naurang L. Saini, Takashi Mizokawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　86　(6)　2017/06

DOI： 10.7566/JPSJ.86.064708 　

ISSN： 0031-9015

Hole-proton mixed conduction of perovskite-oxide thin film with oxygen vacancies and lattice distortion for SOFC electrode Peer-reviewed

T. Higuchi, S. Furuichi, W. Namiki, M. Takayanagi, M. Minohara, K. Horiba, H. Kumigashira, T. Tsuchiya

ECS Transactions　78　(1)　1973-1977　2017/05/30

DOI： 10.1149/07801.1973ecst 　

ISSN： 1938-6737 1938-5862

Strongly three-dimensional electronic structure and Fermi surfaces of SrFe2(As0.65P0.35)(2): Comparison with BaFe2(As1-xPx)(2) (vol 89, 184513, 2014) Peer-reviewed

H. Suzuki, T. Kobayashi, S. Miyasaka, T. Yoshida, K. Okazaki, L. C. C. Ambolode, S. Ideta, M. Yi, M. Hashimoto, D. H. Lu, Z. -X. Shen, K. Ono, H. Kumigashira, S. Tajima, A. Fujimori

PHYSICAL REVIEW B　95　(17)　2017/05

DOI： 10.1103/PhysRevB.95.179901 　

ISSN： 2469-9950

eISSN： 2469-9969

Temperature dependence of Yb valence in the sub-surface of YbB12(001) Peer-reviewed

Kenta Hagiwara, Yusuke Takeno, Yoshiyuki Ohtsubo, Ryu Yukawa, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Julien Rault, Patrick Le Fevre, Francois Bertran, Amina Taleb-Ibrahimi, Fumitoshi Iga, Shin-Ichi Kimura

Journal of Physics: Conference Series　807　(1)　2017/04/06

DOI： 10.1088/1742-6596/807/1/012003 　

ISSN： 1742-6596 1742-6588

Ultrafast melting of spin density wave order in BaFe2As2 observed by time- and angle-resolved photoemission spectroscopy with extreme-ultraviolet higher harmonic generation Peer-reviewed

H. Suzuki, K. Okazaki, T. Yamamoto, T. Someya, M. Okada, K. Koshiishi, M. Fujisawa, T. Kanai, N. Ishii, M. Nakajima, H. Eisaki, K. Ono, H. Kumigashira, J. Itatani, A. Fujimori, S. Shin

PHYSICAL REVIEW B　95　(16)　2017/04

DOI： 10.1103/PhysRevB.95.165112 　

ISSN： 2469-9950

eISSN： 2469-9969

Reversible control of resistance of NdNiO₃ thin film through topotactic fluorination/oxygen annealing

Onozuka Tomoya, Chikamatsu Akira, Katayama Tsukasa, Hirose Yasushi, Harayama Isao, Sekiba Daiichiro, Ikenaga Eiji, Minohara Makoto, Kumigashira Hiroshi, Hasegawa Tetsuya

JSAP Annual Meetings Extended Abstracts　2017.1　1399-1399　2017/03/01

DOI： 10.11470/jsapmeeting.2017.1.0_1399 　

eISSN： 2436-7613

Dirac Fermions in Borophene Peer-reviewed

Baojie Feng, Osamu Sugino, Ro-Ya Liu, Jin Zhang, Ryu Yukawa, Mitsuaki Kawamura, Takushi Iimori, Howon Kim, Yukio Hasegawa, Hui Li, Lan Chen, Kehui Wu, Hiroshi Kumigashira, Fumio Komori, Tai-Chang Chiang, Sheng Meng, Iwao Matsuda

PHYSICAL REVIEW LETTERS　118　(9)　2017/03

DOI： 10.1103/PhysRevLett.118.096401 　

ISSN： 0031-9007

eISSN： 1079-7114

Interlayer states arising from anionic electrons in the honeycomb-lattice-based compounds AeAlSi (Ae = Ca, Sr, Ba) Peer-reviewed

Yangfan Lu, Tomofumi Tada, Yoshitake Toda, Shigenori Ueda, Jiazhen Wu, Jiang Li, Koji Horiba, Hiroshi Kumigashira, Yaoqing Zhang, Hideo Hosono

PHYSICAL REVIEW B　95　(12)　2017/03

DOI： 10.1103/PhysRevB.95.125117 　

ISSN： 2469-9950

eISSN： 2469-9969

Observation of band structure in elemental tellurium with chiral crystal structure

Sakano M., Hirayama M., Takahashi T., Akebi S., Nakayama M., Kuroda K., Miyamoto K., Okuda T., Ono K., Kumgashira H., Miyake T., Murakami S., Sasagawa T., Kondo T.

Meeting Abstracts of the Physical Society of Japan　72.1　1324-1324　2017

DOI： 10.11316/jpsgaiyo.72.1.0_1324 　

eISSN： 2189-0803

Observation of band structure in the misfit compound (PbSe)_1.16(TiSe₂)₂

Takahashi Kengo, Ueno Teppei, Araya Ituki, Kitamura Miho, Horiba Koji, Kumigashira Hiroshi, Shimojima Takahiro, Sakano Masato, Kobayashi Kaya, Akimitsu Jun, Ishizaka Kyoko

Meeting Abstracts of the Physical Society of Japan　72.2　1626-1626　2017

DOI： 10.11316/jpsgaiyo.72.2.0_1626 　

eISSN： 2189-0803

Superconducting gap in surface states of PrFeAsO_1-y observed by Angle-resolved photoemission spectroscopy

Hagiwara K, Horio M, Koshiishi K, Nakata S, Lin Chun, Wan Yuxu, Ishikado M, Ishida S, Eisaki H, Shamoto S, Ideta S, Tanaka K, Ono K, Kumigashira H, Yoshida T, Fujimori A

Meeting Abstracts of the Physical Society of Japan　72.2　1900-1900　2017

DOI： 10.11316/jpsgaiyo.72.2.0_1900 　

eISSN： 2189-0803

Angle-resolved photoemission spectroscopy of the electronic state in Te-annealed FeTe_1-xSe_x

Koshiishi K., Otsuka T., Horio M., Nakata S., Hagiwara K., Lin C., Wan Y., Suzuki M., Kobayashi M., Kumigashira H., Ono K., Watanabe T., Fujimori A.

Meeting Abstracts of the Physical Society of Japan　72.2　1852-1852　2017

DOI： 10.11316/jpsgaiyo.72.2.0_1852 　

eISSN： 2189-0803

Surface Electronic Structure of Proton-doped YSZ Thin Film by Soft-X-ray Photoemission Spectroscopy

Makoto Takayanagi, Takashi Tsuchiya, Makoto Minohara, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

Transactions of the Materials Research Society of Japan　42　(3)　61-64　2017

DOI： 10.14723/tmrsj.42.61 　

ISSN： 1382-3469

eISSN： 2188-1650

Erratum - Publisher’s note: Amorphous gallium oxide as an improved host for inorganic light-emitting thin film semiconductor fabricated at room temperature on glass (ECS J. Solid State Sci. Technol. (2017) 6 (P410) DOI: 10.1149/2.0181707jss) Peer-reviewed

Naoto Watanabe, Junghwan Kim, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Shigenori Ueda, Hideo Hosono, Toshio Kamiya

ECS Journal of Solid State Science and Technology　6　(8)　X1　2017

DOI： 10.1149/2.0171708jss 　

ISSN： 2162-8777 2162-8769

Resonant photoemission and X-ray absorption spectroscopies of lithiated magnetite thin film Peer-reviewed

Tsuchiya, Takashi, Kawamura, Kinya, Namiki, Wataru, Furuichi, Shoto, Takayanagi, Makoto, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Terabe, Kazuya, Higuchi, Tohru

Japanese Journal of Applied Physics　56　(4)　2017

DOI： 10.7567/JJAP.56.04CK01 　

ISSN： 0021-4922

Ce 4f electronic states of CeO1-xFxBiS2 studied by soft x-ray photoemission spectroscopy Peer-reviewed

Wakita, Takanori, Terashima, Kensei, Hamada, Takahiro, Fujiwara, Hirokazu, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Kutluk, Galif, Nagao, Masanori, Watauchi, Satoshi, Tanaka, Isao, Demura, Satoshi, Okazaki, Hiroyuki, Takano, Yoshihiko, Mizuguchi, Yoshikazu, Miura, Osuke, Okada, Kozo, Muraoka, Yuji, Yokoya, Takayoshi

Physical Review B　95　(8)　2017

DOI： 10.1103/PhysRevB.95.085109 　

ISSN： 2469-9950

Reversible Changes in Resistance of Perovskite Nickelate NdNiO3 Thin Films Induced by Fluorine Substitution Peer-reviewed

Onozuka, Tomoya, Chikamatsu, Akira, Katayama, Tsukasa, Hirose, Yasushi, Harayama, Isao, Sekiba, Daiichiro, Ikenaga, Eiji, Minohara, Makoto, Kumigashira, Hiroshi, Hasegawa, Tetsuya

Acs Applied Materials & Interfaces　9　(12)　10882-10887　2017

DOI： 10.1021/acsami.7b00855 　

ISSN： 1944-8244

Electron Conduction of Nd0.6Sr0.4FeO3-delta Thin Film with Oxygen Vacancies Prepared by RF Magnetron Sputtering Peer-reviewed

Namiki, Wataru, Tsuchiya, Takashi, Takayanagi, Makoto, Furuichi, Shoto, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Journal of the Physical Society of Japan　86　(7)　2017

DOI： 10.7566/JPSJ.86.074704 　

ISSN： 0031-9015

Dielectric collapse at the LaAlO3/SrTiO3 (001) heterointerface under applied electric field Peer-reviewed

Minohara, M., Hikita, Y., Bell, C., Inoue, H., Hosoda, M., Sato, H. K., Kumigashira, H., Oshima, M., Ikenaga, E., Hwang, H. Y.

Scientific Reports　7　2017

DOI： 10.1038/s41598-017-09920-9 　

ISSN： 2045-2322

Amorphous Gallium Oxide as an Improved Host for Inorganic Light-Emitting Thin Film Semiconductor Fabricated at Room Temperature on Glass (vol 6, pg P410, 2017) Peer-reviewed

Naoto Watanabe, Junghwan Kim, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Shigenori Ueda, Hideo Hosono, Toshio Kamiya

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY　6　(7)　X1-X1　2017

DOI： 10.1149/2.0171708jss 　

ISSN： 2162-8769

Amorphous Gallium Oxide as an Improved Host for Inorganic Light-Emitting Thin Film Semiconductor Fabricated at Room Temperature on Glass Peer-reviewed

Naoto Watanabe, Junghwan Kim, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Shigenori Ueda, Hideo Hosono, Toshio Kamiya

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY　6　(7)　P410-P414　2017

DOI： 10.1149/2.0181707jss 　

ISSN： 2162-8769

Publisher's Note: Amorphous Gallium Oxide as an Improved Host for Inorganic Light-Emitting Thin Film Semiconductor Fabricated at Room Temperature on Glass (vol 6, pg P410, 2017) Peer-reviewed

Naoto Watanabe, Junghwan Kim, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Shigenori Ueda, Hideo Hosono, Toshio Kamiya

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY　6　(8)　XI-XI　2017

DOI： 10.1149/2.0171708jss 　

ISSN： 2162-8769

eISSN： 2162-8777

Thickness-dependent surface proton conduction in (111) oriented yttria-stabilized zirconia thin film Peer-reviewed

Takayanagi, Makoto, Tsuchiya, Takashi, Kawamura, Kinya, Minohara, Makoto, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Solid State Ionics　311　46-51　2017

DOI： 10.1016/j.ssi.2017.09.003 　

ISSN： 0167-2738

Emergence of Quantum Critical Behavior in Metallic Quantum-Well States of Strongly Correlated Oxides Peer-reviewed

Kobayashi, Masaki, Yoshimatsu, Kohei, Mitsuhashi, Taichi, Kitamura, Miho, Sakai, Enju, Yukawa, Ryu, Minohara, Makoto, Fujimori, Atsushi, Horiba, Koji, Kumigashira, Hiroshi

Scientific Reports　7　2017

DOI： 10.1038/s41598-017-16666-x 　

ISSN： 2045-2322

Making and revealing stacking structure of high quality graphenegrown on SiC(000-1) substrate

K. Tashima, R. Suto, H. Fukidome, M. Suemitsu, K. Horiba, H. Kumigashira, M. Kotsugi, T. Ohkochi

ICSPM23　2016/12/10

Epitaxial growth and electric properties of gamma-Al2O3(110) films on beta-Ga2O3(010) substrates Peer-reviewed

Mai Hattori, Takayoshi Oshima, Ryo Wakabayashi, Kohei Yoshimatsu, Kohei Sasaki, Takekazu Masui, Akito Kuramata, Shigenobu Yamakoshi, Koji Horiba, Hiroshi Kumigashira, Akira Ohtomo

JAPANESE JOURNAL OF APPLIED PHYSICS　55　(12)　2016/12

DOI： 10.7567/JJAP.55.1202B6 　

ISSN： 0021-4922

eISSN： 1347-4065

Hubbard band versus oxygen vacancy states in the correlated electron metal SrVO3 Peer-reviewed

S. Backes, T. C. Rodel, F. Fortuna, E. Frantzeskakis, P. Le Fevre, F. Bertran, M. Kobayashi, R. Yukawa, T. Mitsuhashi, M. Kitamura, K. Horiba, H. Kumigashira, R. Saint-Martin, A. Fouchet, B. Berini, Y. Dumont, A. J. Kim, F. Lechermann, H. O. Jeschke, M. J. Rozenberg, R. Valenti, A. F. Santander-Syro

PHYSICAL REVIEW B　94　(24)　2016/12

DOI： 10.1103/PhysRevB.94.241110 　

ISSN： 2469-9950

eISSN： 2469-9969

Epitaxial synthesis and physical properties of double-perovskite oxide Sr2CoRuO6 thin films Peer-reviewed

K. Watarai, K. Yoshimatsu, K. Horiba, H. Kumigashira, O. Sakata, A. Ohtomo

JOURNAL OF PHYSICS-CONDENSED MATTER　28　(43)　2016/11

DOI： 10.1088/0953-8984/28/43/436005 　

ISSN： 0953-8984

eISSN： 1361-648X

Tailoring Photovoltage Response at SrRuO3/SrTiO3 Heterostructures Peer-reviewed

Ryu Yukawa, Susumu Yamamoto, Kazuma Akikubo, Kaori Takeuchi, Kenichi Ozawa, Hiroshi Kumigashira, Iwao Matsuda

ADVANCED MATERIALS INTERFACES　3　(22)　2016/11

DOI： 10.1002/admi.201600527 　

ISSN： 2196-7350

Phonon-dressed two-dimensional carriers on the ZnO surface Peer-reviewed

R. Yukawa, K. Ozawa, S. Yamamoto, H. Iwasawa, K. Shimada, E. F. Schwier, K. Yoshimatsu, H. Kumigashira, H. Namatame, M. Taniguchi, I. Matsuda

PHYSICAL REVIEW B　94　(16)　2016/10

DOI： 10.1103/PhysRevB.94.165313 　

ISSN： 2469-9950

eISSN： 2469-9969

Topotactic Synthesis of A-site Cation Ordered Perovskite YBaCo₂O₆ Epitaxial Thin Film, Exhibiting Huge Magnetic Anistropy and Spin State Transition

Katayama Tsukasa, Chikamatsu Akira, Hirose Yasushi, Minohara Makoto, Kumigashira Hiroshi, Harayama Isao, Sekiba Daiichiro, Hasegawa Tetsuya

JSAP Annual Meetings Extended Abstracts　2016.2　1362-1362　2016/09/01

DOI： 10.11470/jsapmeeting.2016.2.0_1362 　

eISSN： 2436-7613

Surface Kondo effect and non-trivial metallic state of the Kondo insulator YbB12 Peer-reviewed

Kenta Hagiwara, Yoshiyuki Ohtsubo, Masaharu Matsunami, Shin-ichiro Ideta, Kiyohisa Tanaka, Hidetoshi Miyazaki, Julien E. Rault, Patrick Le Fevre, Francois Bertran, Amina Taleb-Ibrahimi, Ryu Yukawa, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Kazuki Sumida, Taichi Okuda, Fumitoshi Iga, Shin-ichi Kimura

NATURE COMMUNICATIONS　7　2016/08

DOI： 10.1038/ncomms12690 　

ISSN： 2041-1723

Slater to Mott Crossover in the Metal to Insulator Transition of Nd2Ir2O7 Peer-reviewed

M. Nakayama, Takeshi Kondo, Z. Tian, J. J. Ishikawa, M. Halim, C. Bareille, W. Malaeb, K. Kuroda, T. Tomita, S. Ideta, K. Tanaka, M. Matsunami, S. Kimura, N. Inami, K. Ono, H. Kumigashira, L. Balents, S. Nakatsuji, S. Shin

PHYSICAL REVIEW LETTERS　117　(5)　2016/07

DOI： 10.1103/PhysRevLett.117.056403 　

ISSN： 0031-9007

eISSN： 1079-7114

Photoelectrochemical water splitting enhanced by self-assembled metal nanopillars embedded in an oxide semiconductor photoelectrode Peer-reviewed

Seiji Kawasaki, Ryota Takahashi, Takahisa Yamamoto, Masaki Kobayashi, Hiroshi Kumigashira, Jun Yoshinobu, Fumio Komori, Akihiko Kudo, Mikk Lippmaa

NATURE COMMUNICATIONS　7　2016/06

DOI： 10.1038/ncomms11818 　

ISSN： 2041-1723

Electrical and structural properties of TiO

Kawamura Kinya, Suzuki Naoya, Tsuchiya Takashi, Shimazu Yuichi, Minohara Makoto, Kobayashi Masaki, Horiba Koji, Kumigashira Hiroshi, Higuchi Tohru

Jpn. J. Appl. Phys.　55　(6)　06GJ08　2016/05/06

DOI： 10.7567/JJAP.55.06GJ08 　

ISSN： 0021-4922

Correlated electronic states of SrVO3 revealed by angle-resolved photoemission spectroscopy Peer-reviewed

T. Yoshida, M. Kobayashi, K. Yoshimatsu, H. Kumigashira, A. Fujimori

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　208　11-16　2016/04

DOI： 10.1016/j.elspec.2015.11.012 　

ISSN： 0368-2048

eISSN： 1873-2526

Experimental and theoretical investigation of electronic structure of SrFeO3-xFx epitaxial thin films prepared via topotactic reaction Peer-reviewed

Tsukasa Katayama, Akira Chikamatsu, Hideyuki Kamisaka, Hiroshi Kumigashira, Tetsuya Hasegawa

APPLIED PHYSICS EXPRESS　9　(2)　2016/02

DOI： 10.7567/APEX.9.025801 　

ISSN： 1882-0778

eISSN： 1882-0786

Suppression of the antiferromagnetic pseudogap in the electron-doped high-temperature superconductor by protect annealing Peer-reviewed

M. Horio, T. Adachi, Y. Mori, A. Takahashi, T. Yoshida, H. Suzuki, L. C. C. Ambolode, K. Okazaki, K. Ono, H. Kumigashira, H. Anzai, M. Arita, H. Namatame, M. Taniguchi, D. Ootsuki, K. Sawada, M. Takahashi, T. Mizokawa, Y. Koike, A. Fujimori

NATURE COMMUNICATIONS　7　2016/02

DOI： 10.1038/ncomms10567 　

ISSN： 2041-1723

Microscopic observation of degradation of LaNiO3 ultrathin films caused by air exposure Peer-reviewed

Yusuke Wakabayashi, Hiroki Maeda, Tsuyoshi Kimura, Osami Sakata, Enju Sakai, Hiroshi Kumigashira

e-Journal of Surface Science and Nanotechnology　14　14-16　2016/01/30

DOI： 10.1380/ejssnt.2016.14 　

ISSN： 1348-0391

Proton conduction on YSZ electrolyte thin films prepared by RF magnetron sputtering Peer-reviewed

M. Takayanagi, S. Furuichi, W. Namiki, T. Tsuchiya, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, T. Higuchi

ECS Transactions　75　(42)　115-120　2016

DOI： 10.1149/07542.0115ecsl 　

ISSN： 1938-5862 1938-6737

Ion conduction of BaPr03-5 thin film with mixed valence state for SOFC anode electrode Peer-reviewed

S. Furuichi, T. Tsuchiya, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, T. Higuchi

ECS Transactions　75　(42)　99-103　2016

DOI： 10.1149/07542.0099ecst 　

ISSN： 1938-5862 1938-6737

Electron-ion mixed conduction of Nd0.6Sr 0.4FeO3. Cathode electrode thin film for solid oxide fuel cell Peer-reviewed

W. Namiki, M. Takayanagi, S. Furuichi, T. Tsuchiya, M. Minohara, M. Kobayashi, K. Horiba, H. Kumigashira, T. Higuchi

ECS Transactions　75　(42)　83-88　2016

DOI： 10.1149/07542.0083ecst 　

ISSN： 1938-5862 1938-6737

Comparative ARPES studies of LaOxF1-xBiS2 (x=0.23 and 0.46) Peer-reviewed

K. Terashima, T. Wakita, M. Sunagawa, H. Fujiwara, T. Nagayama, K. Ono, H. Kumigashira, M. Nagao, S. Watauchi, I. Tanaka, H. Okazaki, Y. Takano, Y. Mizuguchi, H. Usui, K. Kuroki, Y. Muraoka, T. Yokoya

TMU INTERNATIONAL SYMPOSIUM ON NEW QUANTUM PHASES EMERGING FROM NOVEL CRYSTAL STRUCTURE　683　2016

DOI： 10.1088/1742-6596/683/1/012002 　

ISSN： 1742-6588

Isotropic Kink and Quasiparticle Excitations in the Three-Dimensional Perovskite Manganite La0.6Sr0.4MnO3 Peer-reviewed

Horiba, Koji, Kitamura, Miho, Yoshimatsu, Kohei, Minohara, Makoto, Sakai, Enju, Kobayashi, Masaki, Fujimori, Atsushi, Kumigashira, Hiroshi

Physical Review Letters　116　(7)　2016

DOI： 10.1103/PhysRevLett.116.076401 　

ISSN： 0031-9007

Electron-Ion Mixed Conduction of BaCe0.90Y0.10O3-delta Thin Film Generated by Ru Substitution Peer-reviewed

Ochi, Masanori, Tsuchiya, Takashi, Yamaguchi, Shohei, Suetsugu, Takaaki, Suzuki, Naoya, Kobayashi, Masaki, Minohara, Makoto, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Journal of the Physical Society of Japan　85　(3)　2016

DOI： 10.7566/JPSJ.85.034705 　

ISSN： 0031-9015

Spatial distribution of transferred charges across the heterointerface between perovskite transition metal oxides LaNiO3 and LaMnO3 Peer-reviewed

Kitamura, Miho, Horiba, Koji, Kobayashi, Masaki, Sakai, Enju, Minohara, Makoto, Mitsuhashi, Taichi, Fujimori, Atsushi, Nagai, Takuro, Fujioka, Hiroshi, Kumigashira, Hiroshi

Applied Physics Letters　108　(11)　2016

DOI： 10.1063/1.4944418 　

ISSN： 0003-6951

Electrical and structural properties of BaCe0.85Ru0.05Y0.10O3-delta thin film prepared by RF magnetron sputtering Peer-reviewed

Ochi, Masanori, Tsuchiya, Takashi, Yamaguchi, Shohei, Suetsugu, Takaaki, Suzuki, Naoya, Kobayashi, Masaki, Minohara, Makoto, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Japanese Journal of Applied Physics　55　(6)　2016

DOI： 10.7567/JJAP.55.06GJ02 　

ISSN： 0021-4922

Electronic structure of c-axis controlled alpha-Fe2O3 thin film probed by soft-X-ray spectroscopy Peer-reviewed

Kawamura, Kinya, Suzuki, Naoya, Tsuchiya, Takashi, Yamaguchi, Shohei, Ochi, Masanori, Suetsugu, Takaaki, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Japanese Journal of Applied Physics　55　(6)　2016

DOI： 10.7567/JJAP.55.06GJ04 　

ISSN： 0021-4922

Electrical and structural properties of TiO2-delta thin film with oxygen vacancies prepared by RF magnetron sputtering using oxygen radical Peer-reviewed

Kawamura, Kinya, Suzuki, Naoya, Tsuchiya, Takashi, Shimazu, Yuichi, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Japanese Journal of Applied Physics　55　(6)　2016

DOI： 10.7567/JJAP.55.06GJ08 　

ISSN： 0021-4922

Metal-insulator transition of valence-controlled VO2 thin film prepared by RF magnetron sputtering using oxygen radical Peer-reviewed

Suetsugu, Takaaki, Shimazu, Yuichi, Tsuchiya, Takashi, Kobayashi, Masaki, Minohara, Makoto, Sakai, Enju, Horiba, Koji, Kumigashira, Hiroshi, Higuchi, Tohru

Japanese Journal of Applied Physics　55　(6)　2016

DOI： 10.7567/JJAP.55.06GJ11 　

ISSN： 0021-4922

Thickness-dependent physical properties of La1/3Sr2/3FeO3 thin films grown on SrTiO3 (001) and (111) substrates Peer-reviewed

Minohara, Makoto, Kitamura, Miho, Wadati, Hiroki, Nakao, Hironori, Kumai, Reiji, Murakami, Youichi, Kumigashira, Hiroshi

Journal of Applied Physics　120　(2)　2016

DOI： 10.1063/1.4958670 　

ISSN： 0021-8979

Current Status of BL-2B at Photon Factory Peer-reviewed

Akira Nambu, Kazuhiro Ueda, Koji Horiba, Kimichika Tsuchiya, Hiroshi Kumigashira, Kenta Amemiya

PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (SRI2015)　1741　2016

DOI： 10.1063/1.4952864 　

ISSN： 0094-243X

Epitaxial growth and electronic structure of oxyhydride SrVO2H thin films Peer-reviewed

Katayama, Tsukasa, Chikamatsu, Akira, Yamada, Keisuke, Shigematsu, Kei, Onozuka, Tomoya, Minohara, Makoto, Kumigashira, Hiroshi, Ikenaga, Eiji, Hasegawa, Tetsuya

Journal of Applied Physics　120　(8)　2016

DOI： 10.1063/1.4961446 　

ISSN： 0021-8979

Influence of k(perpendicular to) broadening on ARPES spectra of the (110) and (001) surfaces of SrVO3 films Peer-reviewed

Mitsuhashi, T., Minohara, M., Yukawa, R., Kitamura, M., Horiba, K., Kobayashi, M., Kumigashira, H.

Physical Review B　94　(12)　2016

DOI： 10.1103/PhysRevB.94.125148 　

ISSN： 2469-9950

Ce Core-Level Spectroscopy, and Magnetic and Electrical Transport Properties of Lightly Ce-Doped YCoO3 Peer-reviewed

Kobayashi, Yoshihiko, Koike, Tsuyoshi, Okawa, Mario, Takayanagi, Ryohei, Takei, Shohei, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi, Yasui, Akira, Ikenaga, Eiji, Saitoh, Tomohiko, Asai, Kichizo

Journal of the Physical Society of Japan　85　(11)　2016

DOI： 10.7566/JPSJ.85.114704 　

ISSN： 0031-9015

Quadratic Fermi node in a 3D strongly correlated semimetal Peer-reviewed

Takeshi Kondo, M. Nakayama, R. Chen, J. J. Ishikawa, E. -G. Moon, T. Yamamoto, Y. Ota, W. Malaeb, H. Kanai, Y. Nakashima, Y. Ishida, R. Yoshida, H. Yamamoto, M. Matsunami, S. Kimura, N. Inami, K. Ono, H. Kumigashira, S. Nakatsuji, L. Balents, S. Shin

NATURE COMMUNICATIONS　6　2015/12

DOI： 10.1038/ncomms10042 　

ISSN： 2041-1723

Electron-Ion Mixed Conduction of Ru-Doped BaCe0.9Y0.1O3-δ Thin Film Peer-reviewed

Tohru Higuchi, Tomoyuki Yamashita, Tomohiro Owaku, Yuichi Shimazu, Hiroyuki Kato, Masaki Kobayashi, Hiroshi Kumigashira

TRANSACTIONS OF MATERIAL RESEARCH SOCIETY OF JAPAN　40　(4)　419-422　2015/11

In-plane electronic anisotropy in the antiferromagnetic orthorhombic phase of isovalent-substituted Ba(Fe1-xRux)(2)As-2 Peer-reviewed

L. Liu, T. Mikami, S. Ishida, K. Koshiishi, K. Okazaki, T. Yoshida, H. Suzuki, M. Horio, L. C. C. Ambolode, J. Xu, H. Kumigashira, K. Ono, M. Nakajima, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, T. Kakeshita, S. Uchida, A. Fujimori

PHYSICAL REVIEW B　92　(9)　2015/09

DOI： 10.1103/PhysRevB.92.094503 　

ISSN： 1098-0121

eISSN： 1550-235X

Effects of Cr substitution on the magnetic and transport properties and electronic states of SrRuO3 epitaxial thin films Peer-reviewed

Kaori Kurita, Akira Chikamatsu, Kei Shigematsu, Tsukasa Katayama, Hiroshi Kumigashira, Tomoteru Fukumura, Tetsuya Hasegawa

PHYSICAL REVIEW B　92　(11)　2015/09

DOI： 10.1103/PhysRevB.92.115153 　

ISSN： 1098-0121

eISSN： 1550-235X

Thickness-dependent magnetic properties and strain-induced orbital magnetic moment in SrRuO3 thin films Peer-reviewed

K. Ishigami, K. Yoshimatsu, D. Toyota, M. Takizawa, T. Yoshida, G. Shibata, T. Harano, Y. Takahashi, T. Kadono, V. K. Verma, V. R. Singh, Y. Takeda, T. Okane, Y. Saitoh, H. Yamagami, T. Koide, M. Oshima, H. Kumigashira, A. Fujimori

PHYSICAL REVIEW B　92　(6)　2015/08

DOI： 10.1103/PhysRevB.92.064402 　

ISSN： 1098-0121

eISSN： 1550-235X

Spin-glass behaviors in carrier polarity controlled Fe3-xTixO4 semiconductor thin films Peer-reviewed

H. Yamahara, M. Seki, M. Adachi, M. Takahashi, H. Nasu, K. Horiba, H. Kumigashira, H. Tabata

JOURNAL OF APPLIED PHYSICS　118　(6)　2015/08

DOI： 10.1063/1.4928408 　

ISSN： 0021-8979

eISSN： 1089-7550

Origin of the Anomalous Mass Renormalization in Metallic Quantum Well States of Strongly Correlated Oxide SrVO3 Peer-reviewed

Masaki Kobayashi, Kohei Yoshimatsu, Enju Sakai, Miho Kitamura, Koji Horiba, Atsushi Fujimori, Hiroshi Kumigashira

PHYSICAL REVIEW LETTERS　115　(7)　2015/08

DOI： 10.1103/PhysRevLett.115.076801 　

ISSN： 0031-9007

eISSN： 1079-7114

Dependence of electron correlation strength in Fe1+yTe1-xSex on Se content Peer-reviewed

L. C. C. Ambolode, K. Okazaki, M. Horio, H. Suzuki, L. Liu, S. Ideta, T. Yoshida, T. Mikami, T. Kakeshita, S. Uchida, K. Ono, H. Kumigashira, M. Hashimoto, D. -H. Lu, Z. -X. Shen, A. Fujimori

PHYSICAL REVIEW B　92　(3)　2015/07

DOI： 10.1103/PhysRevB.92.035104 　

ISSN： 1098-0121

eISSN： 1550-235X

Electronic structure and oxygen ion conductivity of as-deposited Ce0.90Sm0.10O2-delta thin film prepared by RF magnetron sputtering Peer-reviewed

Shohei Yamaguchi, Yuji Tasaki, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　54　(6)　2015/06

DOI： 10.7567/JJAP.54.06FJ04 　

ISSN： 0021-4922

eISSN： 1347-4065

Electronic structure of Ti1-xFexO2-delta thin films with oxygen vacancies probed by soft X-ray spectroscopy Peer-reviewed

Katsuya Usui, Shohei Yamaguchi, Naoya Suzuki, Yuichi Shimazu, Takashi Tsuchiya, Enju Sakai, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　54　(6)　2015/06

DOI： 10.7567/JJAP.54.06FJ07 　

ISSN： 0021-4922

eISSN： 1347-4065

Metal-Insulator Transition of c-Axis-Controlled V2O3 Thin Film Peer-reviewed

Yuichi Shimazu, Teppei Okumura, Takashi Tsuchiya, Atsushi Shimada, Kenji Tanabe, Kazuyasu Tokiwa, Masaki Kobayashi, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(6)　2015/06

DOI： 10.7566/JPSJ.84.064701 　

ISSN： 0031-9015

Electronic Structure of b-Axis Oriented VO2 Thin Film with Mixed-Valence States Probed by Soft-X-ray Spectroscopy Peer-reviewed

Takaaki Suetsugu, Yuichi Shimazu, Takashi Tsuchiya, Masaki Kobayashi, Enju Sakai, Hiroshi Kumigashira, Tohru Higuchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(6)　2015/06

DOI： 10.7566/JPSJ.84.064715 　

ISSN： 0031-9015

Comparative ARPES Study on Iron-Platinum-Arsenide Superconductor Ca-10(Pt4As8)(Fe2-xPtxAs2)(5) (x=0.25 and 0.42) Peer-reviewed

Masanori Sunagawa, Rikiya Yoshida, Toshihiko Ishiga, Koji Tsubota, Taihei Jabuchi, Junki Sonoyama, Satomi Kakiya, Daisuke Mitsuoka, Kazutaka Kudo, Minoru Nohara, Kanta Ono, Hiroshi Kumigashira, Tamio Oguchi, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(5)　2015/05

DOI： 10.7566/JPSJ.84.055001 　

ISSN： 0031-9015

Strong Surface-Termination Effect on Electroresistance in Ferroelectric Tunnel Junctions Peer-reviewed

Hiroyuki Yamada, Atsushi Tsurumaki-Fukuchi, Masaki Kobayashi, Takuro Nagai, Yoshikiyo Toyosaki, Hiroshi Kumigashira, Akihito Sawa

ADVANCED FUNCTIONAL MATERIALS　25　(18)　2708-2714　2015/05

DOI： 10.1002/adfm.201500371 　

ISSN： 1616-301X

eISSN： 1616-3028

Photoemission and x-ray absorption studies of the isostructural to Fe-based superconductors diluted magnetic semiconductor Ba1-xKx(Zn1-yMny)(2)As-2 Peer-reviewed

H. Suzuki, K. Zhao, G. Shibata, Y. Takahashi, S. Sakamoto, K. Yoshimatsu, B. J. Chen, H. Kumigashira, F-H Chang, H-J Lin, D. J. Huang, C. T. Chen, Bo Gu, S. Maekawa, Y. J. Uemura, C. Q. Jin, A. Fujimori

PHYSICAL REVIEW B　91　(14)　2015/04

DOI： 10.1103/PhysRevB.91.140401 　

ISSN： 1098-0121

eISSN： 1550-235X

Direct growth of metallic TiH2 thin films by pulsed laser deposition Peer-reviewed

Kohei Yoshimatsu, Takayuki Suzuki, Nobuo Tsuchimine, Koji Horiba, Hiroshi Kumigashira, Takayoshi Oshima, Akira Ohtomo

APPLIED PHYSICS EXPRESS　8　(3)　2015/03

DOI： 10.7567/APEX.8.035801 　

ISSN： 1882-0778

eISSN： 1882-0786

Determination of band diagram for a p-n junction between Mott insulator LaMnO3 and band insulator Nb:SrTiO3 Peer-reviewed

M. Kitamura, M. Kobayashi, E. Sakai, R. Takahashi, M. Lippmaa, K. Horiba, H. Fujioka, H. Kumigashira

APPLIED PHYSICS LETTERS　106　(6)　2015/02

DOI： 10.1063/1.4908570 　

ISSN： 0003-6951

eISSN： 1077-3118

Proton conduction of BaCe0.90Y0.10O3-delta thin film with lattice distortion Peer-reviewed

Tohru Higuchi, Tomohiro Owaku, Yasutaka Lida, Enju Sakai, Masaki Kobayashi, Hiroshi Kumigashira

SOLID STATE IONICS　270　1-5　2015/02

DOI： 10.1016/j.ssi.2014.11.016 　

ISSN： 0167-2738

eISSN： 1872-7689

Synthesis and magnetic properties of double-perovskite oxide La2MnFeO6 thin films Peer-reviewed

K. Yoshimatsu, K. Nogami, K. Watarai, K. Horiba, H. Kumigashira, O. Sakata, T. Oshima, A. Ohtomo

PHYSICAL REVIEW B　91　(5)　2015/02

DOI： 10.1103/PhysRevB.91.054421 　

ISSN： 1098-0121

eISSN： 1550-235X

Enhanced Electrical Transparency by Ultrathin LaAlO3 Insertion at Oxide Metal/Semiconductor Heterointerfaces Peer-reviewed

Yajima, Takeaki, Minohara, Makoto, Bell, Christopher, Kumigashira, Hiroshi, Oshima, Masaharu, Hwang, Harold Y., Hikita, Yasuyuki

Nano Letters　15　(3)　1622-1626　2015

DOI： 10.1021/nl504169m 　

ISSN： 1530-6984

Controlling band alignments by artificial interface dipoles at perovskite heterointerfaces Peer-reviewed

Yajima, Takeaki, Hikita, Yasuyuki, Minohara, Makoto, Bell, Christopher, Mundy, Julia A., Kourkoutis, Lena F., Muller, David A., Kumigashira, Hiroshi, Oshima, Masaharu, Hwang, Harold Y.

Nature Communications　6　2015

DOI： 10.1038/ncomms7759 　

ISSN： 2041-1723

Hole-ion Mixed Conduction of Orientation-Controlled BaPrO3-delta Thin Film with Mixed Valence States Peer-reviewed

Higuchi, Tohru, Oda, Asuka, Tsuchiya, Takashi, Suetsugu, Takaaki, Suzuki, Naoya, Yamaguchi, Shohei, Minohara, Makoto, Kobayashi, Masaki, Horiba, Koji, Kumigashira, Hiroshi

Journal of the Physical Society of Japan　84　(11)　2015

DOI： 10.7566/JPSJ.84.114708 　

ISSN： 0031-9015

Fermi surfaces and p-d hybridization in the diluted magnetic semiconductor Ba1-xKx(Zn1-yMny)(2)As-2 studied by soft x-ray angle-resolved photoemission spectroscopy Peer-reviewed

Suzuki, H., Zhao, G. Q., Zhao, K., Chen, B. J., Horio, M., Koshiishi, K., Xu, J., Kobayashi, M., Minohara, M., Sakai, E., Horiba, K., Kumigashira, H., Gu, Bo, Maekawa, S., Uemura, Y. J., Jin, C. Q., Fujimori, A.

Physical Review B　92　(23)　2015

DOI： 10.1103/PhysRevB.92.235120 　

ISSN： 1098-0121

Proximity to Fermi-surface topological change in superconducting la O0.54 F0.46Bi S2 Peer-reviewed

Kensei Terashima, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Takayuki Muro, Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Hidetomo Usui, Katsuhiro Suzuki, Kazuhiko Kuroki, Yuji Muraoka, Takayoshi Yokoya

Physical Review B - Condensed Matter and Materials Physics　90　(22)　2014/12/22

DOI： 10.1103/PhysRevB.90.220512 　

ISSN： 1098-0121

eISSN： 1550-235X

Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2 Peer-reviewed

Terashima Kensei, Sonoyama Junki, Wakita Takanori, Sunagawa Masanori, Ono Kanta, Kumigashira Hiroshi, Muro Takayuki, Nagao Masanori, Watauchi Satoshi, Tanaka Isao, Okazaki Hiroyuki, Takano Yoshihiko, Miura Osuke, Mizuguchi Yoshikazu, Usui Hidetomo, Suzuki Katsuhiro, Kuroki Kazuhiko, Muraoka Yuji, Yokoya Takayoshi

PHYSICAL REVIEW B　90　(22)　2014/12/22

DOI： 10.1103/PhysRevB.90.220512 　

ISSN： 2469-9950

Anisotropy of the superconducting gap in the iron-based superconductor BaFe2(As1-xPx)(2) Peer-reviewed

T. Yoshida, S. Ideta, T. Shimojima, W. Malaeb, K. Shinada, H. Suzuki, I. Nishi, A. Fujimori, K. Ishizaka, S. Shin, Y. Nakashima, H. Anzai, M. Arita, A. Ino, H. Namatame, M. Taniguchi, H. Kumigashira, K. Ono, S. Kasahara, T. Shibauchi, T. Terashima, Y. Matsuda, M. Nakajima, S. Uchida, Y. Tomioka, T. Ito, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, H. Ikeda, R. Arita, T. Saito, S. Onari, H. Kontani

SCIENTIFIC REPORTS　4　2014/12

DOI： 10.1038/srep07292 　

ISSN： 2045-2322

Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2 Peer-reviewed

Kensei Terashima, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Takayuki Muro, Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Hidetomo Usui, Katsuhiro Suzuki, Kazuhiko Kuroki, Yuji Muraoka, Takayoshi Yokoya

PHYSICAL REVIEW B　90　(22)　2014/12

DOI： 10.1103/PhysRevB.90.220512 　

ISSN： 2469-9950

eISSN： 2469-9969

Photoemission and DMFT study of electronic correlations in SrMoO3: Effects of Hund's rule coupling and possible plasmonic sideband Peer-reviewed

H. Wadati, J. Mravlje, K. Yoshimatsu, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, A. Fujimori, A. Georges, A. Radetinac, K. S. Takahashi, M. Kawasaki, Y. Tokura

PHYSICAL REVIEW B　90　(20)　2014/11

DOI： 10.1103/PhysRevB.90.205131 　

ISSN： 1098-0121

eISSN： 1550-235X

Electronic Structures of CeM2Al10 (M = Fe, Ru, and Os) Studied by Soft X-ray Resonant and High-Resolution Photoemission Spectroscopies Peer-reviewed

Toshihiko Ishiga, Takanori Wakita, Rikiya Yoshida, Hiroyuki Okazaki, Koji Tsubota, Masanori Sunagawa, Kanta Uenaka, Kozo Okada, Hiroshi Kumigashira, Masaharu Oshima, Keisuke Yutani, Yuji Muro, Toshiro Takabatake, Yuji Muraoka, Takayoshi Yokoya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　83　(9)　2014/09

DOI： 10.7566/JPSJ.83.094717 　

ISSN： 0031-9015

Electronic Structure and Photoelectrochemical Properties of an Ir-Doped SrTiO3 Photocatalyst Peer-reviewed

Seiji Kawasaki, Ryota Takahashi, Kazuto Akagi, Jun Yoshinobu, Fumio Komori, Koji Horiba, Hiroshi Kumigashira, Katsuya Iwashina, Akihiko Kudo, Mikk Lippmaa

JOURNAL OF PHYSICAL CHEMISTRY C　118　(35)　20222-20228　2014/09

DOI： 10.1021/jp5062573 　

ISSN： 1932-7447

Lifting of xz/yz orbital degeneracy at the structural transition in detwinned FeSe Peer-reviewed

T. Shimojima, Y. Suzuki, T. Sonobe, A. Nakamura, M. Sakano, J. Omachi, K. Yoshioka, M. Kuwata-Gonokami, K. Ono, H. Kumigashira, A. E. Boehmer, F. Hardy, T. Wolf, C. Meingast, H. V. Loehneysen, H. Ikeda, K. Ishizaka

PHYSICAL REVIEW B　90　(12)　2014/09

DOI： 10.1103/PhysRevB.90.121111 　

ISSN： 1098-0121

eISSN： 1550-235X

Orbital correlations and dimensional crossover in epitaxial Pr0.5Ca0.5MnO3/La0.5Sr0.5MnO3 superlattices Peer-reviewed

H. Wadati, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, E. Sakai, H. Kumigashira, T. Sugiyama, E. Ikenaga, M. Nakamura, M. Kawasaki, Y. Tokura

NEW JOURNAL OF PHYSICS　16　2014/07

DOI： 10.1088/1367-2630/16/7/073044 　

ISSN： 1367-2630

Cu-O-Cr hybridization effects on the electronic structure of a hole-doped delafossite oxide CuCr1-xMgxO2 Peer-reviewed

Mario Okawa, Takumi Yokobori, Kohta Konishi, Ryota Takei, Kazuya Katayama, Satoshi Oozono, Takashi Shinmura, Tetsuji Okuda, Hiroki Wadati, Enju Sakai, Kanta Ono, Hiroshi Kumigashira, Masaharu Oshima, Takeharu Sugiyama, Eiji Ikenaga, Noriaki Hamada, Tomohiko Saitoh

JPS Conference Proceedings　3　017027-1-017027-6　2014/06

Microscopically-Tuned Band Structure of Epitaxial Graphene through Interface and Stacking Variations Using Si Substrate Microfabrication Peer-reviewed

Hirokazu Fukidome, Takayuki Ide, Yusuke Kawai, Toshihiro Shinohara, Naoka Nagamura, Koji Horiba, Masato Kotsugi, Takuo Ohkochi, Toyohiko Kinoshita, Hiroshi Kumighashira, Masaharu Oshima, Maki Suemitsu

SCIENTIFIC REPORTS　4　5173　2014/06

DOI： 10.1038/srep05173 　

ISSN： 2045-2322

Growth of TiO2-delta thin film by RF magnetron sputtering using oxygen radicals and Ti metal Peer-reviewed

Yuichi Shimazu, Teppei Okumura, Enju Sakai, Hiroshi Kumigashira, Mario Okawa, Tomohiko Saitoh, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　53　(6)　2014/06

DOI： 10.7567/JJAP.53.06JG01 　

ISSN： 0021-4922

eISSN： 1347-4065

Electrical conductivity of Sc-doped TiO2 thin film prepared by RF magnetron sputtering Peer-reviewed

Tomohiro Inoue, Teppei Okumura, Yuichi Shimazu, Enju Sakai, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　53　(6)　2014/06

DOI： 10.7567/JJAP.53.06JG03 　

ISSN： 0021-4922

eISSN： 1347-4065

Thickness-dependent ferromagnetic metal to paramagnetic insulator transition in La0.6Sr0.4MnO3 thin films studied by x-ray magnetic circular dichroism Peer-reviewed

G. Shibata, K. Yoshimatsu, E. Sakai, V. R. Singh, V. K. Verma, K. Ishigami, T. Harano, T. Kadono, Y. Takeda, T. Okane, Y. Saitoh, H. Yamagami, A. Sawa, H. Kumigashira, M. Oshima, T. Koide, A. Fujimori

PHYSICAL REVIEW B　89　(23)　2014/06

DOI： 10.1103/PhysRevB.89.235123 　

ISSN： 1098-0121

eISSN： 1550-235X

Coexistence of Bloch electrons and glassy electrons in Ca-10(Ir4As8)(Fe2-xIrxAs2)(5) revealed by angle- resolved photoemission spectroscopy Peer-reviewed

K. Sawada, D. Ootsuki, K. Kudo, D. Mitsuoka, M. Nohara, T. Noda, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, N. L. Saini, T. Mizokawa

PHYSICAL REVIEW B　89　(22)　2014/06

DOI： 10.1103/PhysRevB.89.220508 　

ISSN： 1098-0121

eISSN： 1550-235X

Electronic structure of V2O3 thin film prepared by RF magnetron sputtering using oxygen radical and V-metal Peer-reviewed

Yuichi Shimazu, Teppei Okumura, Atsushi Shimada, Kenji Tanabe, Kazuyasu Tokiwa, Enju Sakai, Hiroshi Kumigashira, Tohru Higuchi

JAPANESE JOURNAL OF APPLIED PHYSICS　53　(6)　2014/06

DOI： 10.7567/JJAP.53.06JG05 　

ISSN： 0021-4922

eISSN： 1347-4065

Strongly three-dimensional electronic structure and Fermi surfaces of SrFe2(As0.65P0.35)(2): Comparison with BaFe2(As1-xPx)(2) Peer-reviewed

H. Suzuki, T. Kobayashi, S. Miyasaka, T. Yoshida, K. Okazaki, L. C. C. Ambolode, S. Ideta, M. Yi, M. Hashimoto, D. H. Lu, Z. -X. Shen, K. Ono, H. Kumigashira, S. Tajima, A. Fujimori

PHYSICAL REVIEW B　89　(18)　2014/05

DOI： 10.1103/PhysRevB.89.184513 　

ISSN： 1098-0121

eISSN： 1550-235X

Persistent insulator-to-metal transition of a VO2 thin film induced by soft X-ray irradiation Peer-reviewed

Yuji Muraoka, Hiroki Nagao, Shinsuke Katayama, Takanori Wakita, Masaaki Hirai, Takayoshi Yokoya, Hiroshi Kumigashira, Masaharu Oshima

JAPANESE JOURNAL OF APPLIED PHYSICS　53　(5)　2014/05

DOI： 10.7567/JJAP.53.05FB09 　

ISSN： 0021-4922

eISSN： 1347-4065

Metallic conductivity in infinite-layer strontium iron oxide thin films reduced by calcium hydride Peer-reviewed

T. Katayama, A. Chikamatsu, Y. Hirose, H. Kumigashira, T. Fukumura, T. Hasegawa

JOURNAL OF PHYSICS D-APPLIED PHYSICS　47　(13)　2014/04

DOI： 10.1088/0022-3727/47/13/135304 　

ISSN： 0022-3727

eISSN： 1361-6463

Bandwidth-controlled metal-insulator transition in epitaxial PrNiO3 ultrathin films induced by dimensional crossover Peer-reviewed

Enju Sakai, Kohei Yoshimatsu, Masatomo Tamamitsu, Koji Horiba, Atsushi Fujimori, Masaharu Oshima, Hiroshi Kumigashira

APPLIED PHYSICS LETTERS　104　(17)　2014/04

DOI： 10.1063/1.4874980 　

ISSN： 0003-6951

eISSN： 1077-3118

Soft X-ray Photoemission Study of New BiS2-Layered Superconductor LaO1-xFxBiS2 Peer-reviewed

Shinsuke Nagira, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Yudai Izumi, Takayuki Muro, Hiroshi Kumigashira, Masaharu Oshima, Keita Deguchi, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Katsuhiro Suzuki, Hidetomo Usui, Kazuhiko Kuroki, Kozo Okada, Yuji Muraoka, Takayoshi Yokoya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　83　(3)　2014/03

DOI： 10.7566/JPSJ.83.033703 　

ISSN： 0031-9015

Te 5 p orbitals bring three-dimensional electronic structure to two-dimensional Ir0.95Pt0.05Te2 Peer-reviewed

D. Ootsuki, T. Toriyama, S. Pyon, K. Kudo, M. Nohara, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, T. Noda, T. Sugimoto, A. Fujimori, N. L. Saini, T. Konishi, Y. Ohta, T. Mizokawa

PHYSICAL REVIEW B　89　(10)　2014/03

DOI： 10.1103/PhysRevB.89.104506 　

ISSN： 1098-0121

eISSN： 1550-235X

Characteristic two-dimensional Fermi surface topology of high-T-c iron-based superconductors Peer-reviewed

Masanori Sunagawa, Toshihiko Ishiga, Koji Tsubota, Taihei Jabuchi, Junki Sonoyama, Keita Iba, Kazutaka Kudo, Minoru Nohara, Kanta Ono, Hiroshi Kumigashira, Tomohiro Matsushita, Masashi Arita, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Takanori Wakita, Yuji Muraoka, Takayoshi Yokoya

SCIENTIFIC REPORTS　4　2014/03

DOI： 10.1038/srep04381 　

ISSN： 2045-2322

Anomalous two peak structure in the Angle-resolved Photoemission Spectra of Ba1-xKxFe2As2 Peer-reviewed

T. Shimojima, T. Sonobe, W. Malaeb, K. Shinada, A. Chainani, S. Shin, T. Yoshida, S. Ideta, A. Fujimori, H. Kumigashira, K Ono, Y. Nakashima, H. Anzai, M. Arita, A. Ino, H. Namatame, M. Taniguchi, M. Nakajima, S. Uchida, Y. Tomioka, T. Ito, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, K. Ohgushi, S. Kasahara, T. Terashima, H. Ikeda, T. Shibauchi, Y. Matsuda, K. Ishizaka

Phys. Rev. B　89　045101-1-045101-10　2014/01/03

Pseudogap formation above the superconducting dome in iron pnictides Peer-reviewed

T. Shimojima, T. Sonobe, W. Malaeb, K. Shinada, A. Chainani, S. Shin, T. Yoshida, S. Ideta, A. Fujimori, H. Kumigashira, K. Ono, Y. Nakashima, H. Anzai, M. Arita, A. Ino, H. Namatame, M. Taniguchi, M. Nakajima, S. Uchida, Y. Tomioka, T. Ito, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, K. Ohgushi, S. Kasahara, T. Terashima, H. Ikeda, T. Shibauchi, Y. Matsuda, K. Ishizaka

PHYSICAL REVIEW B　89　(4)　2014/01

DOI： 10.1103/PhysRevB.89.045101 　

ISSN： 1098-0121

eISSN： 1550-235X

Electronic structure of Li2Fe1-xMnxP2O7 for lithium-ion battery studied by resonant photoemission spectroscopy Peer-reviewed

Koji Horiba, Shota Ito, Shodai Kurosumi, Naoka Nagamura, Satoshi Toyoda, Hiroshi Kumigashira, Masaharu Oshima, Naoya Furuta, Shin-ichi Nishimura, Atsuo Yamada, Noritaka Mizuno

1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013)　502　2014

DOI： 10.1088/1742-6596/502/1/012004 　

ISSN： 1742-6588

Structural and electronic properties of anatase Ti1-xFexO2-delta thin film prepared by RF magnetron sputtering Peer-reviewed

K. Usui, T. Okumura, E. Sakai, H. Kumigashira, T. Higuchi

1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013)　502　2014

DOI： 10.1088/1742-6596/502/1/012001 　

ISSN： 1742-6588

Chemical-state-resolved depth profiles of Al/Pr0.7Ca 0.3MnO3 stacked structures for application in resistive switching devices Peer-reviewed

S. Toyoda, T. Namiki, E. Sakai, K. Nakata, M. Oshima, H. Kumigashira

Journal of Applied Physics　114　(24)　2013/12/28

DOI： 10.1063/1.4858381 　

ISSN： 0021-8979

Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr0.8Ca0.2Mn1-yCoyO3 thin films Peer-reviewed

K. Yoshimatsu, H. Wadati, E. Sakai, T. Harada, Y. Takahashi, T. Harano, G. Shibata, K. Ishigami, T. Kadono, T. Koide, T. Sugiyama, E. Ikenaga, H. Kumigashira, M. Lippmaa, M. Oshima, A. Fujimori

PHYSICAL REVIEW B　88　(17)　2013/11

DOI： 10.1103/PhysRevB.88.174423 　

ISSN： 1098-0121

eISSN： 1550-235X

Observation of rebirth of metallic paths during resistance switching of metal nanowire Peer-reviewed

K. Horiba, K. Fujiwara, N. Nagamura, S. Toyoda, H. Kumigashira, M. Oshima, H. Takagi

APPLIED PHYSICS LETTERS　103　(19)　2013/11

DOI： 10.1063/1.4829469 　

ISSN： 0003-6951

eISSN： 1077-3118

Epitaxial Synthesis and Electronic Properties of Double-Perovskite Sr2TiRuO6 Films Peer-reviewed

Kengo Nogami, Kohei Yoshimatsu, Hisanori Mashiko, Enju Sakai, Hiroshi Kumigashira, Osami Sakata, Takayoshi Oshima, Akira Ohtomo

APPLIED PHYSICS EXPRESS　6　(10)　2013/10

DOI： 10.7567/APEX.6.105502 　

ISSN： 1882-0778

eISSN： 1882-0786

Determination of the surface and interface phase shifts in metallic quantum well structures of perovskite oxides Peer-reviewed

K. Yoshimatsu, E. Sakai, M. Kobayashi, K. Horiba, T. Yoshida, A. Fujimori, M. Oshima, H. Kumigashira

Physical Review B - Condensed Matter and Materials Physics　88　(11)　2013/09/19

DOI： 10.1103/PhysRevB.88.115308 　

ISSN： 1098-0121 1550-235X

Absence of superconductivity in the hole-doped Fe pnictide Ba(Fe1-xMnx)(2)As-2: Photoemission and x-ray absorption spectroscopy studies Peer-reviewed

H. Suzuki, T. Yoshida, S. Ideta, G. Shibata, K. Ishigami, T. Kadono, A. Fujimori, M. Hashimoto, D. H. Lu, Z. -X. Shen, K. Ono, E. Sakai, H. Kumigashira, M. Matsuo, T. Sasagawa

PHYSICAL REVIEW B　88　(10)　2013/09

DOI： 10.1103/PhysRevB.88.100501 　

ISSN： 1098-0121

Collapsed Tetragonal Phase Transition of Ca(Fe1-xRhx)(2)As-2 Studied by Photoemission Spectroscopy Peer-reviewed

Koji Tsubota, Takanori Wakita, Hiroki Nagao, Chiaki Hiramatsu, Toshihiko Ishiga, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Masataka Danura, Kazutaka Kudo, Minoru Nohara, Yuji Muraoka, Takayoshi Yokoya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　82　(7)　2013/07

DOI： 10.7566/JPSJ.82.073705 　

ISSN： 0031-9015

Development of Cryocooled YBCO Vector Magnet System with Three-axial Super-high Vacuum Bores

FUJIHIRA Jun-ichi, UCHIDA Akira, FUJIHIRA Sei-ichi, FURUSE Mitsuho, OKANO Makoto, FUCHINO Shuichiro, KADONO Toshiharu, YOSHIMATSU Kouhei, FUJIMORI Atsushi, KUMIGASHIRA Hiroshi, KOIDE Tsuneharu

TEION KOGAKU　48　(5)　233-238　2013/05/25

DOI： 10.2221/jcsj.48.233 　

ISSN： 0389-2441

Electronic structure of the hole-doped delafossite oxides CuCr <inf>1-x</inf>Mg<inf>x</inf>O<inf>2</inf>

T. Yokobori, M. Okawa, K. Konishi, R. Takei, K. Katayama, S. Oozono, T. Shinmura, T. Okuda, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, N. Hamada, T. Saitoh

Physical Review B - Condensed Matter and Materials Physics　87　(19)　2013/05/17

DOI： 10.1103/PhysRevB.87.195124 　

ISSN： 1098-0121

eISSN： 1550-235X

Electronic structure of the hole-doped delafossite oxides CuCr1-xMgxO2 Peer-reviewed

T. Yokobori, M. Okawa, K. Konishi, R. Takei, K. Katayama, S. Oozono, T. Shinmura, T. Okuda, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga, N. Hamada, T. Saitoh

PHYSICAL REVIEW B　87　(19)　2013/05

DOI： 10.1103/PhysRevB.87.195124 　

ISSN： 2469-9950

eISSN： 2469-9969

Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors Peer-reviewed

M. Sakano, M. S. Bahramy, A. Katayama, T. Shimojima, H. Murakawa, Y. Kaneko, W. Malaeb, S. Shin, K. Ono, H. Kumigashira, R. Arita, N. Nagaosa, H. Y. Hwang, Y. Tokura, K. Ishizaka

Physical Review Letters　110　(10)　2013/03/07

DOI： 10.1103/PhysRevLett.110.107204 　

ISSN： 0031-9007

eISSN： 1079-7114

Resonant photoemission spectroscopy of the cathode material LixMn0.5Fe0.5PO4 for lithium-ion battery Peer-reviewed

Shodai Kurosumi, Koji Horiba, Naoka Nagamura, Satoshi Toyoda, Hiroshi Kumigashira, Masaharu Oshima, Sho Furutsuki, Shin-ichi Nishimura, Atsuo Yamada, Noritaka Mizuno

JOURNAL OF POWER SOURCES　226　42-46　2013/03

DOI： 10.1016/j.jpowsour.2012.10.041 　

ISSN： 0378-7753

Gradual localization of Ni 3d states in LaNiO3 ultrathin films induced by dimensional crossover Peer-reviewed

Enju Sakai, Masatomo Tamamitsu, Kohei Yoshimatsu, Satoshi Okamoto, Koji Horiba, Masaharu Oshima, Hiroshi Kumigashira

PHYSICAL REVIEW B　87　(7)　2013/02

DOI： 10.1103/PhysRevB.87.075132 　

ISSN： 1098-0121

Electronic and transport properties of Eu-substituted infinite-layer strontium ferrite thin films Peer-reviewed

Akira Chikamatsu, Toshiya Matsuyama, Tsukasa Katayama, Yasushi Hirose, Hiroshi Kumigashira, Masaharu Oshima, Tomoteru Fukumura, Tetsuya Hasegawa

Journal of Crystal Growth　378　165-167　2013

DOI： 10.1016/j.jcrysgro.2012.12.067 　

ISSN： 0022-0248

Hole and Ion Conductions of Sc-doped SrTi03 Thin Film Prepared by RF Magnetron Sputtering Peer-reviewed

H. Kato, T, Okumura, E. Sakai, H. Kumigashira, T. Higuchi

Trans. Mater. Res. Soc. Jpn.　37　(4)　571-574　2012/12

DOI： 10.14723/tmrsj.37.571 　

ISSN： 1382-3469

Core level and valence band spectroscopy of SrRuO3: Electron correlation and covalence effects Peer-reviewed

E. B. Guedes, M. Abbate, K. Ishigami, A. Fujimori, K. Yoshimatsu, H. Kumigashira, M. Oshima, F. C. Vicentin, P. T. Fonseca, R. J. O. Mossanek

PHYSICAL REVIEW B　86　(23)　2012/12

DOI： 10.1103/PhysRevB.86.235127 　

ISSN： 1098-0121

Significant increase in conduction band discontinuity due to solid phase epitaxy of Al2O3 gate insulator films on GaN semiconductor Peer-reviewed

S. Toyoda, T. Shinohara, H. Kumigashira, M. Oshima, Y. Kato

APPLIED PHYSICS LETTERS　101　(23)　2012/12

DOI： 10.1063/1.4769818 　

ISSN： 0003-6951

Epitaxially Stabilized EuMoO3: A New Itinerant Ferromagnet Peer-reviewed

Yusuke Kozuka, Hidenobu Seki, Takahiro C. Fujita, Suvankar Chakraverty, Kohei Yoshimatsu, Hiroshi Kumigashira, Masaharu Oshima, Mohammad S. Bahramy, Ryotaro Arita, Masashi Kawasaki

CHEMISTRY OF MATERIALS　24　(19)　3746-3750　2012/10

DOI： 10.1021/cm302231k 　

ISSN： 0897-4756

eISSN： 1520-5002

Te concentration dependent photoemission and inverse-photoemission study of FeSe1-xTex Peer-reviewed

Takayoshi Yokoya, Rikiya Yoshida, Yuki Utsumi, Koji Tsubota, Hiroyuki Okazaki, Takanori Wakita, Yoshikazu Mizuguchi, Yoshihiko Takano, Takayuki Muro, Yukako Kato, Hiroshi Kumigashira, Masaharu Oshima, Hisatomo Harima, Yoshihiro Aiura, Hitoshi Sato, Akihiro Ino, Hirofumi Namatame, Masaki Taniguchi, Masaaki Hirai, Yuji Muraoka

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS　13　(5)　2012/10

DOI： 10.1088/1468-6996/13/5/054403 　

ISSN： 1468-6996

eISSN： 1878-5514

Electronic Structure of SrTi0.99Sc0.01O3 Thin Film Studied by High-Resolution Soft-X-ray Spectroscopy Peer-reviewed

Teppei Okumura, Tomohiro Inoue, Yuji Tasaki, Enju Sakai, Hiroshi Kumigashira, Tohru Higuchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　81　(9)　2012/09

DOI： 10.1143/JPSJ.81.094705 　

ISSN： 0031-9015

Determining factor of effective work function in metal/bi-layer high-k gate stack structure studied by photoemission spectroscopy Peer-reviewed

S. Toyoda, H. Kumigashira, M. Oshima, H. Sugaya, H. Morita

APPLIED PHYSICS LETTERS　100　(11)　2012/03

DOI： 10.1063/1.3695166 　

ISSN： 0003-6951

Investigation of electronic states of infinite-layer SrFeO2 epitaxial thin films by X-ray photoemission and absorption spectroscopies Peer-reviewed

Akira Chikamatsu, Toshiya Matsuyama, Yasushi Hirose, Hiroshi Kumigashira, Masaharu Oshima, Tetsuya Hasegawa

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　184　(11-12)　547-550　2012/01

DOI： 10.1016/j.elspec.2011.09.002 　

ISSN： 0368-2048

Depth profiling the potential in perovskite oxide heterojunctions using photoemission spectroscopy Peer-reviewed

Minohara, M., Horiba, K., Kumigashira, H., Ikenaga, E., Oshima, M.

Physical Review B　85　(16)　2012

DOI： 10.1103/PhysRevB.85.165108 　

ISSN： 1098-0121

Self-Energy on the Low- to High-Energy Electronic Structure of Correlated Metal SrVO3 Peer-reviewed

Aizaki, S., Yoshida, T., Yoshimatsu, K., Takizawa, M., Minohara, M., Ideta, S., Fujimori, A., Gupta, K., Mahadevan, P., Horiba, K., Kumigashira, H., Oshima, M.

Physical Review Letters　109　(5)　2012

DOI： 10.1103/PhysRevLett.109.056401 　

ISSN： 0031-9007

Resonant Photoemission Spectroscopy of the Cathode Material LixFePO4 for Lithium Ion Battery Peer-reviewed

Shodai Kurosumi, Naoka Nagamura, Satoshi Toyoda, Koji Horiba, Hiroshi Kumigashira, Masaharu Oshima, Sho Furutsuki, Shin-ichi Nishimura, Atsuo Yamada, Noritaka Mizuno

JOURNAL OF PHYSICAL CHEMISTRY C　115　(51)　25519-25522　2011/12

DOI： 10.1021/jp208069m 　

ISSN： 1932-7447

Competition between instabilities of Peierls transition and Mott transition in W-doped VO2 thin films Peer-reviewed

Enju Sakai, Kohei Yoshimatsu, Keisuke Shibuya, Hiroshi Kumigashira, Eiji Ikenaga, Masashi Kawasaki, Yoshinori Tokura, Masaharu Oshima

PHYSICAL REVIEW B　84　(19)　2011/11

DOI： 10.1103/PhysRevB.84.195132 　

ISSN： 1098-0121

Scanning photoelectron microscope for nanoscale three-dimensional spatial-resolved electron spectroscopy for chemical analysis Peer-reviewed

K. Horiba, Y. Nakamura, N. Nagamura, S. Toyoda, H. Kumigashira, M. Oshima, K. Amemiya, Y. Senba, H. Ohashi

REVIEW OF SCIENTIFIC INSTRUMENTS　82　(11)　2011/11

DOI： 10.1063/1.3657156 　

ISSN： 0034-6748

Chemical-state resolved depth profile and band discontinuity in TiN/HfSiON gate stack structure with AlOx cap layer Peer-reviewed

S. Toyoda, H. Kamada, H. Kumigashira, M. Oshima

JOURNAL OF APPLIED PHYSICS　110　(10)　2011/11

DOI： 10.1063/1.3662147 　

ISSN： 0021-8979

Magnetic and electronic properties of ordered double-perovskite La 2VMnO6 thin films Peer-reviewed

S. Chakraverty, K. Yoshimatsu, Y. Kozuka, H. Kumigashira, M. Oshima, T. Makino, A. Ohtomo, M. Kawasaki

Physical Review B - Condensed Matter and Materials Physics　84　(13)　2011/10/19

DOI： 10.1103/PhysRevB.84.132411 　

ISSN： 1098-0121 1550-235X

Magnetic and electronic properties of ordered double-perovskite La2VMnO6 thin films Peer-reviewed

S. Chakraverty, K. Yoshimatsu, Y. Kozuka, H. Kumigashira, M. Oshima, T. Makino, A. Ohtomo, M. Kawasaki

PHYSICAL REVIEW B　84　(13)　2011/10

DOI： 10.1103/PhysRevB.84.132411 　

ISSN： 2469-9950

eISSN： 2469-9969

Carrier compensation mechanism in heavily Nb-doped anatase Ti1-xNbxO2+delta epitaxial thin films Peer-reviewed

H. Nogawa, A. Chikamatsu, Y. Hirose, S. Nakao, H. Kumigashira, M. Oshima, T. Hasegawa

JOURNAL OF PHYSICS D-APPLIED PHYSICS　44　(36)　2011/09

DOI： 10.1088/0022-3727/44/36/365404 　

ISSN： 0022-3727

eISSN： 1361-6463

Formation of transition layers at metal/perovskite oxide interfaces showing resistive switching behaviors Peer-reviewed

T. Yamamoto, R. Yasuhara, I. Ohkubo, H. Kumigashira, M. Oshima

JOURNAL OF APPLIED PHYSICS　110　(5)　2011/09

DOI： 10.1063/1.3631821 　

ISSN： 0021-8979

eISSN： 1089-7550

An n-Type Transparent Conducting Oxide: Nb12O29 Peer-reviewed

Takeo Ohsawa, Junpei Okubo, Tohru Suzuki, Hiroshi Kumigashira, Masaharu Oshima, Taro Hitosugi

JOURNAL OF PHYSICAL CHEMISTRY C　115　(33)　16625-16629　2011/08

DOI： 10.1021/jp203021u 　

ISSN： 1932-7447

Nano-scale characterization of poly-Si gate on high-k gate stack structures by scanning photoemission microscopy* Peer-reviewed

S. Toyoda, Y. Nakamura, K. Horiba, H. Kumigashira, M. Oshima, K. Amemiya

e-Journal of Surface Science and Nanotechnology　9　224-227　2011/05/21

DOI： 10.1380/ejssnt.2011.224 　

ISSN： 1348-0391

Band offsets of polar and nonpolar GaN/ZnO heterostructures determined by synchrotron radiation photoemission spectroscopy Peer-reviewed

J. W. Liu, A. Kobayashi, S. Toyoda, H. Kamada, A. Kikuchi, J. Ohta, H. Fujioka, H. Kumigashira, M. Oshima

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　248　(4)　956-959　2011/04

DOI： 10.1002/pssb.201046459 　

ISSN： 0370-1972

eISSN： 1521-3951

Electron beam irradiation-induced reduction of Sn on epitaxial rutile SnxTi1-xO2 alloy thin films Peer-reviewed

Yutaro Komuro, Hiroshi Kumigashira, Masaharu Oshima, Yuji Matsumoto

THIN SOLID FILMS　519　(8)　2555-2558　2011/02

DOI： 10.1016/j.tsf.2010.11.048 　

ISSN： 0040-6090

Synchrotron Radiation Nano-Spectroscopy of Dielectrics for LSI and ReRAM Peer-reviewed

Masaharu Oshima, Satoshi Toyoda, Koji Horiba, Ryutaro Yasuhara, Hiroshi Kumigashira

PHYSICS AND TECHNOLOGY OF HIGH-K MATERIALS 9　41　(3)　453-460　2011

DOI： 10.1149/1.3633061 　

ISSN： 1938-5862

Electronic Structure of the Novel Filled Skutterudite PrPt4Ge12 Superconductor Peer-reviewed

Yoshiaki Nakamura, Hiroyuki Okazaki, Rikiya Yoshida, Takanori Wakita, Masaaki Hirai, Yuji Muraka, Hiroyuki Takeya, Kazuto Hirata, Hiroshi Kumigashira, Masaharu Oshima, Takayoshi Yokoya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(12)　2010/12

DOI： 10.1143/JPSJ.79.124701 　

ISSN： 0031-9015

Electronic structures of c-plane and a-plane AlN/ZnO heterointerfaces determined by synchrotron radiation photoemission spectroscopy Peer-reviewed

J. W. Liu, A. Kobayashi, K. Ueno, S. Toyoda, A. Kikuchi, J. Ohta, H. Fujioka, H. Kumigashira, M. Oshima

APPLIED PHYSICS LETTERS　97　(25)　2010/12

DOI： 10.1063/1.3530445 　

ISSN： 0003-6951

Interfacial reactions in Ru metal-electrode/HfSiON gate stack structures studied by synchrotron-radiation photoelectron spectroscopy Peer-reviewed

H. Kamada, S. Toyoda, T. Tanimura, H. Kumigashira, M. Oshima, G. L. Liu, Z. Liu, T. Sukegawa

JOURNAL OF APPLIED PHYSICS　108　(12)　2010/12

DOI： 10.1063/1.3525584 　

ISSN： 0021-8979

Thermal stability of TiN/HfSiON gate stack structures studied by synchrotron-radiation photoemission spectroscopy Peer-reviewed

S. Toyoda, H. Kamada, H. Kumigashira, M. Oshima, K. Iwamoto, T. Sukegawa, Z. Liu

APPLIED PHYSICS LETTERS　97　(26)　2010/12

DOI： 10.1063/1.3532846 　

ISSN： 0003-6951

Chemical trend of Fermi-level shift in transition metal-doped TiO2 films Peer-reviewed

Yuji Matsumoto, Masao Katayama, Takatoshi Abe, Takeo Ohsawa, Isao Ohkubo, Hiroshi Kumigashira, Masaharu Oshima, Hideomi Koinuma

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN　118　(1383)　993-996　2010/11

DOI： 10.2109/jcersj2.118.993 　

ISSN： 1882-0743

eISSN： 1348-6535

Molecular Beam Deposition of Nanoscale Ionic Liquids in Ultrahigh Vacuum Peer-reviewed

Shingo Maruyama, Yoko Takeyama, Hiroki Taniguchi, Hiroki Fukumoto, Mitsuru Itoh, Hiroshi Kumigashira, Masaharu Oshima, Takakazu Yamamoto, Yuji Matsumoto

ACS NANO　4　(10)　5946-5952　2010/10

DOI： 10.1021/nn101036v 　

ISSN： 1936-0851

eISSN： 1936-086X

In-depth Profile Analysis in Metal/high-k Gate Stack Structures Studied by Synchrotron-radiation Photoelectron Spectroscopy

TOYODA Satoshi, KAMADA Hiroyuki, KUMIGASHIRA Hiroshi, OSHIMA Masaharu, IWAMOTO Kunihiko, SUKEGAWA Takae, LIU Ziyuan

J. Surf. Sci. Soc. Jpn.　31　(9)　441-447　2010/09/10

DOI： 10.1380/jsssj.31.441 　

ISSN： 0388-5321

Interfacial chemical states of resistance-switching metal/Pr0.7Ca0.3MnO3 interfaces Peer-reviewed

R. Yasuhara, T. Yamamoto, I. Ohkubo, H. Kumigashira, M. Oshima

APPLIED PHYSICS LETTERS　97　(13)　2010/09

DOI： 10.1063/1.3496033 　

ISSN： 0003-6951

eISSN： 1077-3118

Effect of nitrogen bonding states on dipole at the HfSiO/SiON interface studied by photoemission spectroscopy Peer-reviewed

S. Toyoda, H. Kamada, A. Kikuchi, H. Kumigashira, M. Oshima, K. Iwamoto, T. Sukegawa, Z. Liu

JOURNAL OF APPLIED PHYSICS　107　(12)　2010/06

DOI： 10.1063/1.3449077 　

ISSN： 0021-8979

Dimensional-Crossover-Driven Metal-Insulator Transition in SrVO3 Ultrathin Films Peer-reviewed

K. Yoshimatsu, T. Okabe, H. Kumigashira, S. Okamoto, S. Aizaki, A. Fujimori, M. Oshima

PHYSICAL REVIEW LETTERS　104　(14)　2010/04

DOI： 10.1103/PhysRevLett.104.147601 　

ISSN： 0031-9007

Photoinduced charge-trapping phenomena in metal/high-k gate stack structures studied by synchrotron radiation photoemission spectroscopy Peer-reviewed

T. Tanimura, S. Toyoda, H. Kamada, H. Kumigashira, M. Oshima, T. Sukegawa, G. L. Liu, Z. Liu

APPLIED PHYSICS LETTERS　96　(16)　2010/04

DOI： 10.1063/1.3409162 　

ISSN： 0003-6951

eISSN： 1077-3118

Annealing effects of in-depth profile and band discontinuity in TiN/LaO/HfSiO/SiO2/Si gate stack structure studied by angle-resolved photoemission spectroscopy from backside Peer-reviewed

S. Toyoda, H. Kamada, T. Tanimura, H. Kumigashira, M. Oshima, T. Ohtsuka, Y. Hata, M. Niwa

APPLIED PHYSICS LETTERS　96　(4)　2010/01

DOI： 10.1063/1.3298355 　

ISSN： 0003-6951

Transport properties and electronic states of anatase Ti1-xWxO2 epitaxial thin films Peer-reviewed

Utahito Takeuchi, Akira Chikamatsu, Taro Hitosugi, Hiroshi Kumigashira, Masaharu Oshima, Yasushi Hirose, Toshihiro Shimada, Tetsuya Hasegawa

JOURNAL OF APPLIED PHYSICS　107　(2)　2010/01

DOI： 10.1063/1.3277057 　

ISSN： 0021-8979

Carrier Compensation by Excess Oxygen Atoms in Anatase Ti0.94Nb0.06O2+delta Epitaxial Thin Films Peer-reviewed

Hiroyuki Nogawa, Taro Hitosugi, Akira Chikamatsu, Shoichiro Nakao, Yasushi Hirose, Toshihiro Shimada, Hiroshi Kumigashira, Masaharu Oshima, Tetsuya Hasegawa

JAPANESE JOURNAL OF APPLIED PHYSICS　49　(4)　2010

DOI： 10.1143/JJAP.49.041102 　

ISSN： 0021-4922

Termination layer dependence of Schottky barrier height for La(0.6)Sr(0.4)MnO(3)/Nb:SrTiO(3) heterojunctions Peer-reviewed

Minohara, M., Yasuhara, R., Kumigashira, H., Oshima, M.

Physical Review B　81　(23)　2010

DOI： 10.1103/PhysRevB.81.235322 　

ISSN： 1098-0121

Synchrotron Radiation Photoelectron Spectroscopy of Metal Gate/HfSiO(N)/SiO(N)/Si Stack Structures Peer-reviewed

M. Oshima, S. Toyoda, H. Kamada, T. Tanimura, Y. Nakamura, K. Horiba, H. Kumigashira

PHYSICS AND TECHNOLOGY OF HIGH-K MATERIALS 8　33　(3)　231-240　2010

DOI： 10.1149/1.3481610 　

ISSN： 1938-5862

Relationship between band alignment and chemical states upon annealing in HfSiON/SiON stacked films on Si substrates Peer-reviewed

T. Tanimura, S. Toyoda, H. Kamada, H. Kumigashira, M. Oshima, G. L. Liu, Z. Liu, K. Ikeda

APPLIED PHYSICS LETTERS　95　(18)　2009/11

DOI： 10.1063/1.3258073 　

ISSN： 0003-6951

Chemical stability and transport properties of ultrathin La1.2Sr1.8Mn2O7 Ruddlesden-Popper films Peer-reviewed

M. Matvejeff, K. Yoshimatsu, H. Kumigashira, M. Oshima, M. Lippmaa

APPLIED PHYSICS LETTERS　95　(15)　2009/10

DOI： 10.1063/1.3243978 　

ISSN： 0003-6951

Pressure-induced change in the electronic structure of epitaxially strained La1-xSrxMnO3 thin films Peer-reviewed

K. Horiba, A. Maniwa, A. Chikamatsu, K. Yoshimatsu, H. Kumigashira, H. Wadati, A. Fujimori, S. Ueda, H. Yoshikawa, E. Ikenaga, J. J. Kim, K. Kobayashi, M. Oshima

PHYSICAL REVIEW B　80　(13)　2009/10

DOI： 10.1103/PhysRevB.80.132406 　

ISSN： 1098-0121

Systematic Analysis of ARPES Spectra of Transition-Metal Oxides: Nature of Effective d Band Peer-reviewed

Hiroki Wadati, Akira Chikamatsu, Masaru Takizawa, Hiroshi Kumigashira, Teppei Yoshida, Takashi Mizokawa, Atsushi Fujimori, Masaharu Oshima, Noriaki Hamada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　78　(9)　2009/09

DOI： 10.1143/JPSJ.78.094709 　

ISSN： 0031-9015

Study on mechanism of crystallization in HfO2 films on Si substrates by in-depth profile analysis using photoemission spectroscopy Peer-reviewed

Satoshi Toyoda, Haruhiko Takahashi, Hiroshi Kumigashira, Masaharu Oshima, Dong-Ick Lee, Shiyu Sun, Zhi Liu, Yun Sun, Piero A. Pianetta, Itaru Oshiyama, Kaori Tai, Seiichi Fukuda

JOURNAL OF APPLIED PHYSICS　106　(6)　2009/09

DOI： 10.1063/1.3212979 　

ISSN： 0021-8979

Madelung potentials and covalency effect in strained La1-xSrxMnO3 thin films studied by core-level photoemission spectroscopy Peer-reviewed

H. Wadati, A. Maniwa, A. Chikamatsu, H. Kumigashira, M. Oshima, T. Mizokawa, A. Fujimori, G. A. Sawatzky

PHYSICAL REVIEW B　80　(12)　2009/09

DOI： 10.1103/PhysRevB.80.125107 　

ISSN： 1098-0121

Inhomogeneous chemical states in resistance-switching devices with a planar-type Pt/CuO/Pt structure Peer-reviewed

R. Yasuhara, K. Fujiwara, K. Horiba, H. Kumigashira, M. Kotsugi, M. Oshima, H. Takagi

APPLIED PHYSICS LETTERS　95　(1)　2009/07

DOI： 10.1063/1.3175720 　

ISSN： 0003-6951

Mechanism of Carrier Mobility Degradation Induced by Crystallization of HfO2 Gate Dielectrics Peer-reviewed

Takashi Ando, Takayoshi Shimura, Heiji Watanabe, Tomoyuki Hirano, Shinichi Yoshida, Kaori Tai, Shinpei Yamaguchi, Hayato Iwamoto, Shingo Kadomura, Satoshi Toyoda, Hiroshi Kumigashira, Masaharu Oshima

APPLIED PHYSICS EXPRESS　2　(7)　2009/07

DOI： 10.1143/APEX.2.071402 　

ISSN： 1882-0778

Electronic structure characterization of La2NiMnO6 epitaxial thin films using synchrotron-radiation photoelectron spectroscopy and optical spectroscopy Peer-reviewed

M. Kitamura, I. Ohkubo, M. Matsunami, K. Horiba, H. Kumigashira, Y. Matsumoto, H. Koinuma, M. Oshima

APPLIED PHYSICS LETTERS　94　(26)　2009/06

DOI： 10.1063/1.3159826 　

ISSN： 0003-6951

Yoshimatsu et al. Reply Peer-reviewed

K. Yoshimatsu, R. Yasuhara, H. Kumigashira, M. Oshima

PHYSICAL REVIEW LETTERS　102　(19)　2009/05

DOI： 10.1103/PhysRevLett.102.199704 　

ISSN： 0031-9007

In situ photoemission study of Nd1-xSrxMnO3 epitaxial thin films Peer-reviewed

H. Wadati, A. Chikamatsu, H. Kumigashira, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

PHYSICAL REVIEW B　79　(15)　2009/04

DOI： 10.1103/PhysRevB.79.153106 　

ISSN： 1098-0121

Angle-resolved photoemission study of Nb-doped SrTiO3 Peer-reviewed

M. Takizawa, K. Maekawa, H. Wadati, T. Yoshida, A. Fujimori, H. Kumigashira, M. Oshima

PHYSICAL REVIEW B　79　(11)　2009/03

DOI： 10.1103/PhysRevB.79.113103 　

ISSN： 1098-0121

eISSN： 1550-235X

Thickness dependent electronic structure of La0.6Sr0.4MnO3 layer in SrTiO3/La0.6Sr0.4MnO3/SrTiO3 heterostructures studied by hard x-ray photoemission spectroscopy Peer-reviewed

K. Yoshimatsu, K. Horiba, H. Kumigashira, E. Ikenaga, M. Oshima

APPLIED PHYSICS LETTERS　94　(7)　2009/02

DOI： 10.1063/1.3081016 　

ISSN： 0003-6951

Effects of thermal annealing on charge density and N chemical states in HfSiON films Peer-reviewed

T. Tanimura, H. Kamada, S. Toyoda, H. Kumigashira, M. Oshima, G. L. Liu, Z. Liu, K. Ikeda

APPLIED PHYSICS LETTERS　94　(8)　2009/02

DOI： 10.1063/1.3088856 　

ISSN： 0003-6951

Orientation dependence of the Schottky barrier height for La(0.6)Sr(0.4)MnO(3)/SrTiO(3) heterojunctions Peer-reviewed

Minohara, M., Furukawa, Y., Yasuhara, R., Kumigashira, H., Oshima, M.

Applied Physics Letters　94　(24)　2009

DOI： 10.1063/1.3154523 　

ISSN： 0003-6951

Coherent and incoherent d band dispersions in SrVO(3) Peer-reviewed

Takizawa, M., Minohara, M., Kumigashira, H., Toyota, D., Oshima, M., Wadati, H., Yoshida, T., Fujimori, A., Lippmaa, M., Kawasaki, M., Koinuma, H., Sordi, G., Rozenberg, M.

Physical Review B　80　(23)　2009

DOI： 10.1103/PhysRevB.80.235104 　

ISSN： 1098-0121

Analysis of x-ray irradiation effect in high-k gate dielectrics by time-dependent photoemission spectroscopy using synchrotron radiation Peer-reviewed

T. Tanimura, S. Toyoda, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

SURFACE AND INTERFACE ANALYSIS　40　(13)　1606-1609　2008/12

DOI： 10.1002/sia.2970 　

ISSN： 0142-2421

Electronic Band Structure of Transparent Conductor: Nb-Doped Anatase TiO2 Peer-reviewed

Taro Hitosugi, Hideyuki Kamisaka, Koichi Yamashita, Hiroyuki Nogawa, Yutaka Furubayashi, Shoichiro Nakao, Naoomi Yamada, Akira Chikamatsu, Hiroshi Kumigashira, Masaharu Oshima, Yasushi Hirose, Toshihiro Shimada, Tetsuya Hasegawa

APPLIED PHYSICS EXPRESS　1　(11)　2008/11

DOI： 10.1143/APEX.1.111203 　

ISSN： 1882-0778

Control of oxidation and reduction reactions at HfSiO/Si interfaces through N exposure or incorporation Peer-reviewed

H. Kamada, T. Tanimura, S. Toyoda, H. Kumigashira, M. Oshima, G. L. Liu, Z. Liu, K. Ikeda

APPLIED PHYSICS LETTERS　93　(21)　2008/11

DOI： 10.1063/1.3036894 　

ISSN： 0003-6951

Thermal stability in a-Si/HfSiO(N)/Si gate stack structures studied by photoemission spectroscopy using synchrotron radiation Peer-reviewed

S. Toyoda, H. Kamada, T. Tanimura, H. Kumigashira, M. Oshima, G. L. Liu, Z. Liu, K. Ikeda

APPLIED PHYSICS LETTERS　93　(18)　2008/11

DOI： 10.1063/1.2998578 　

ISSN： 0003-6951

Origin of metallic states at the heterointerface between the band insulators LaAlO(3) and SrTiO(3) Peer-reviewed

K. Yoshimatsu, R. Yasuhara, H. Kumigashira, M. Oshima

PHYSICAL REVIEW LETTERS　101　(2)　2008/07

DOI： 10.1103/PhysRevLett.101.026802 　

ISSN： 0031-9007

Trap-controlled space-charge-limited current mechanism in resistance switching at Al/Pr(0.7)Ca(0.3)MnO(3) interface Peer-reviewed

T. Harada, I. Ohkubo, K. Tsubouchi, H. Kumigashira, T. Ohnishi, M. Lippmaa, Y. Matsumoto, H. Koinuma, M. Oshima

APPLIED PHYSICS LETTERS　92　(22)　2008/06

DOI： 10.1063/1.2938049 　

ISSN： 0003-6951

Epitaxial growth and surface metallic nature of LaNiO3 thin films Peer-reviewed

K. Tsubouchi, I. Ohkubo, H. Kumigashira, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, M. Oshima

APPLIED PHYSICS LETTERS　92　(26)　2008/06

DOI： 10.1063/1.2955534 　

ISSN： 0003-6951

eISSN： 1077-3118

Application of spectroscopic photoemission and low energy electron microscope to high-k gate dielectrics: Relationship between surface morphology and electronic states during Hf-silicide formation Peer-reviewed

R. Yasuhara, T. Taniuchi, H. Kumigashira, M. Oshima, F. Guo, T. Kinoshita, K. Ono, K. Ikeda, G. -L. Liu, Z. Liu, K. Usuda

APPLIED SURFACE SCIENCE　254　(15)　4757-4761　2008/05

DOI： 10.1016/j.apsusc.2008.01.084 　

ISSN： 0169-4332

Depth profiling of chemical states and charge density in HfSiON by photoemission spectroscopy using synchrotron radiation Peer-reviewed

T. Tanimura, S. Toyoda, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu

APPLIED PHYSICS LETTERS　92　(8)　2008/02

DOI： 10.1063/1.2841705 　

ISSN： 0003-6951

Modification of reflection high-energy electron diffraction system for in situ monitoring of oxide epitaxy at high oxygen pressure Peer-reviewed

K. Tsubouchi, I. Ohkubo, T. Harada, H. Kumigashira, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, M. Oshima

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS　148　(1-3)　16-18　2008/02

DOI： 10.1016/j.mseb.2007.09.005 　

ISSN： 0921-5107

Field-induced resistance switching at metal/perovskite manganese oxide interface Peer-reviewed

I. Ohkubo, K. Tsubouchi, T. Harada, H. Kumigashira, K. Itaka, Y. Matsumoto, T. Ohnishi, M. Lippmaa, H. Koinuma, M. Oshima

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS　148　(1-3)　13-15　2008/02

DOI： 10.1016/j.mseb.2007.09.004 　

ISSN： 0921-5107

eISSN： 1873-4944

Electrode dependence and film resistivity electric-field-induced resistance-switching in epitaxial NiO films effect in the phenomena Peer-reviewed

T. Ishiharaa, I. Ohkubo, K. Tsubouchi, H. Kumigashira, U. S. Joshi, Y. Matsumoto, H. Koinuma, M. Oshima

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS　148　(1-3)　40-42　2008/02

DOI： 10.1016/j.mseb.2007.09.073 　

ISSN： 0921-5107

eISSN： 1873-4944

Highly reliable TaO x ReRAM and direct evidence of redox reaction mechanism Peer-reviewed

Z. Wei, Y. Kanzawa, K. Arita, Y. Katoh, K. Kawai, S. Muraoka, S. Mitani, S. Fujii, K. Katayama, M. Iijima, T. Mikawa, T. Ninomiya, R. Miyanaga, Y. Kawashima, K. Tsuji, A. Himeno, T. Okada, R. Azuma, K. Shimakawa, H. Sugaya, T. Takagi, R. Yasuhara, KHoriba, H. Kumigashira, M. Oshima

Technical Digest - International Electron Devices Meeting, IEDM　2008

DOI： 10.1109/IEDM.2008.4796676 　

ISSN： 0163-1918

Highly Reliable TaOx ReRAM and Direct Evidence of Redox Reaction Mechanism Peer-reviewed

Z. Wei, Y. Kanzawa, K. Arita, Y. Katoh, K. Kawai, S. Muraoka, S. Mitani, S. Fujii, K. Katayama, M. Iijima, T. Mikawa, T. Ninomiya, R. Miyanaga, Y. Kawashima, K. Tsuji, A. Himeno, T. Okada, R. Azuma, K. Shimakawa, H. Sugaya, T. Takagi, R. Yasuhara, K. Horiba, H. Kumigashira, M. Oshima

IEEE INTERNATIONAL ELECTRON DEVICES MEETING 2008, TECHNICAL DIGEST　293-+　2008

DOI： 10.1109/IEDM.2008.4796676 　

ISSN： 2380-9248

In situ photoemission study of Pr(1-x)Ca(x)MnO(3) epitaxial thin films with suppressed charge fluctuations Peer-reviewed

H. Wadati, A. Maniwa, A. Chikamatsu, I. Ohkubo, H. Kumigashira, M. Oshima, A. Fujimori, M. Lippmaa, M. Kawasaki, H. Koinuma

PHYSICAL REVIEW LETTERS　100　(2)　2008/01

DOI： 10.1103/PhysRevLett.100.026402 　

ISSN： 0031-9007

Interfacial electronic structure of SrTiO(3)/SrRuO(3) heterojuctions studied by in situ photoemission spectroscopy Peer-reviewed

Kumigashira, H., Minohara, M., Takizawa, M., Fujimori, A., Toyota, D., Ohkubo, I., Oshima, M., Lippmaa, M., Kawasaki, M.

Applied Physics Letters　92　(12)　2008

DOI： 10.1063/1.2899943 　

ISSN： 0003-6951

Temperature-dependent photoemission and x-ray absorption studies of the metal-insulator transition in Bi1-x Lax Ni O3 Peer-reviewed

Hiroki Wadati, Kiyohisa Tanaka, Atsushi Fujimori, Takashi Mizokawa, Hiroshi Kumigashira, Masaharu Oshima, Shintaro Ishiwata, Masaki Azuma, Mikio Takano

Physical Review B - Condensed Matter and Materials Physics　76　(20)　2007/11/29

DOI： 10.1103/PhysRevB.76.205123 　

ISSN： 1098-0121 1550-235X

Gradual disappearance of the Fermi surface near the metal-insulator transition in La1-xSrxMnO3 thin films Peer-reviewed

Chikamatsu A, Wadati H, Kumigashira H, Oshima M, Fujimori A, Lippmaa M, Ono K, Kawasaki M, Koinuma H

PHYSICAL REVIEW B　76　(20)　2007/11

DOI： 10.1103/PhysRevB.76.201103 　

ISSN： 2469-9950

Photoemission study of perovskite-type manganites with stripe ordering Peer-reviewed

K. Ebata, H. Wadati, M. Takizawa, K. Maekawa, A. Fujimori, A. Chikamatsu, H. Kumigashira, M. Oshima, Y. Tomioka, H. Kuwahara, Y. Tokura

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM　20　(7-8)　543-546　2007/11

DOI： 10.1007/s10948-007-0271-2 　

ISSN： 1557-1939

Magnetic domain structure of a technically patterned ferromagnetic La0.6Sr0.4MnO3 thin film Peer-reviewed

M. Kubota, T. Taniuchi, R. Yasuhara, H. Kumigashira, M. Oshima, K. Ono, H. Okazaki, T. Wakita, T. Yokoya, H. Akinaga, M. Lippmaa, M. Kawasaki, H. Koinuma

APPLIED PHYSICS LETTERS　91　(18)　2007/10

DOI： 10.1063/1.2801699 　

ISSN： 0003-6951

Thickness dependence of magnetic domain formation in La0.6Sr0.4MnO3 epitaxial thin films studied by XMCD-PEEM Peer-reviewed

Toshiyuki Taniuchi, Ryutaro Yasuhara, Hiroshi Kumigashira, Masato Kubota, Hiroyuki Okazaki, Takanori Wakita, Takanori Yokoya, Kanta Ono, Masaharu Oshima, Mikk Lippmaa, Masashi Kawasaki, Hideomi Koinuma

SURFACE SCIENCE　601　(20)　4690-4693　2007/10

DOI： 10.1016/j.susc.2007.05.036 　

ISSN： 0039-6028

Photoemission study of TiO2/VO2 interfaces Peer-reviewed

K. Maekawa, M. Takizawa, H. Wadati, T. Yoshida, A. Fujimori, H. Kumigashira, M. Oshima, Y. Muraoka, Y. Nagao, Z. Hiroi

PHYSICAL REVIEW B　76　(11)　2007/09

DOI： 10.1103/PhysRevB.76.115121 　

ISSN： 1098-0121

Suppression of silicidation and crystallization by atmosphere controlled annealing for poly-crystalline silicon/HfO2/SiO2/Si gate stack structures Peer-reviewed

H. Takahashi, S. Toyoda, J. Okabayashi, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

APPLIED PHYSICS LETTERS　91　(1)　2007/07

DOI： 10.1063/1.2753106 　

ISSN： 0003-6951

High-throughput characterization of metal electrode performance for electric-field-induced resistance switching in metal/Pr0.7Ca0.3MnO3/metal structures Peer-reviewed

Kenta Tsubouchi, Isao Ohkubo, Hiroshi Kumigashira, Masaharu Oshima, Yuji Matsumoto, Kenji Itaka, Tsuyoshi Ohnishi, Mikk Lippmaa, Hideomi Koinuma

ADVANCED MATERIALS　19　(13)　1711-+　2007/07

DOI： 10.1002/adma.200601957 　

ISSN： 0935-9648

eISSN： 1521-4095

Electronic and chemical state analysis of oxide heterointerfaces using in situ synchrotron radiation photoemission spectroscopy Peer-reviewed

Hiroshi Kumigashira, Masaharu Oshimai

BUNSEKI KAGAKU　56　(6)　409-418　2007/06

ISSN： 0525-1931

Temperature-dependence of the electronic structure of La1-xSrxMnO3 thin films studied by in situ photoemission spectroscopy Peer-reviewed

K. Horiba, A. Chikamatsu, H. Kumigashira, M. Oshima, H. Wadati, A. Fujimori, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　156　XCI-XCI　2007/05

ISSN： 0368-2048

Temperature-dependence of the electronic structure of La1-xSrxMnO3 thin films studied by in situ photoemission spectroscopy Peer-reviewed

K. Horiba, A. Chikamatsu, H. Kumigashira, M. Oshima, H. Wadati, A. Fujimori, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　156　375-378　2007/05

DOI： 10.1016/j.elspec.2006.12.036 　

ISSN： 0368-2048

In situ photoemission characterization of the tunneling barrier in La0.6Sr0.4MnO3SrTiO3/La0.6Sr0.4MnO3 tunneling junctions Peer-reviewed

H. Kumigashira, R. Hashimoto, A. Chikamatsu, M. Oshima, H. Wadati, A. Fujimori, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　1997-1999　2007/03

DOI： 10.1016/j.jmmm.2006.10.690 　

ISSN： 0304-8853

Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates Peer-reviewed

A. Maniwa, K. Okano, I. Ohkubo, H. Kumigashira, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　2237-2238　2007/03

DOI： 10.1016/j.jmmm.2006.10.817 　

ISSN： 0304-8853

eISSN： 1873-4766

In situ photoemission study of Pr1-xCaxMnO3 epitaxial thin films Peer-reviewed

H. Wadati, A. Maniwa, H. Ohkubo, H. Kumigashira, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　963-965　2007/03

DOI： 10.1007/j.jmmm.2006.10.636 　

ISSN： 0304-8853

In situ angle-resolved photoemission study of half-metallic La0.6Sr0.4MnO3 thin films Peer-reviewed

A. Chikamatsu, H. Wadati, H. Kumigashira, M. Oshima, A. Fujimori, N. Hamada, T. Ohnishi, M. Lippmaa, K. Ono, M. Kawasaki, H. Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　1030-1032　2007/03

DOI： 10.1016/j.jmmm.2006.10.226 　

ISSN： 0304-8853

Gradual disappearance of the Fermi surface near the metal-insulator transition in La1-x Srx Mn O3 thin films

Chikamatsu, A., Wadati, H., Kumigashira, H., Oshima, M., Fujimori, A., Lippmaa, M., Ono, K., Kawasaki, M., Koinuma, H.

Physical Review B - Condensed Matter and Materials Physics　76　(20)　2007

DOI： 10.1103/PhysRevB.76.201103 　

ISSN： 1098-0121 1550-235X

Annealing-induced interfacial reactions between gate electrodes and HfO2/Si gate stacks studied by synchrotron - Radiation photoemission spectroscopy Peer-reviewed

H. Takahashi, J. Okabayashi, S. Toyoda, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

SYNCHROTRON RADIATION INSTRUMENTATION, PTS 1 AND 2　879　1569-+　2007

ISSN： 0094-243X

growth-and-analysis with synchrotron radiation of thin films for oxide electronics Peer-reviewed

M. Oshima, H. Kumigashira, K. Horiba, T. Ohnishi, M. Lippmaa, M. Kawasaki, H. Koinuma

SYNCHROTRON RADIATION INSTRUMENTATION, PTS 1 AND 2　879　1667-+　2007

DOI： 10.1063/1.2436388 　

ISSN： 0094-243X

High performance and high reliability dual metal CMOS gate stacks using novel high-k bi-layer control technique Peer-reviewed

T. Ando, T. Hirano, K. Tai, S. Yamaguchi, K. Tanaka, I. Oshiyama, M. Nakata, K. Watanabe, R. Yamamoto, S. Kanda, Y. Tateshita, H. Wakabayashi, Y. Tagawa, M. Tsukamoto, H. Iwamoto, M. Saito, S. Toyoda, H. Kumigashira, M. Oshima, N. Nagashima, S. Kadomura

2007 International Symposium on VLSI Technology, Systems and Applications (VLSI-TSA), Proceedings of Technical Papers　46-47　2007

Band diagrams of spin tunneling junctions La0.6Sr0.4MnO3/Nb : SrTiO3 and SrRuO3/Nb : SrTiO3 determined by in situ photoemission spectroscopy Peer-reviewed

Minohara, M., Ohkubo, I., Kumigashira, H., Oshima, M.

Applied Physics Letters　90　(13)　2007

DOI： 10.1063/1.2717517 　

ISSN： 0003-6951

Electronic and chemical state analysis of oxide heterointerfaces using in situ synchrotron radiation photoemission spectroscopy Invited Peer-reviewed

Hiroshi Kumigashira, Masaharu Oshima

Bunseki Kagaku　56　(6)　409-418　2007

DOI： 10.2116/bunsekikagaku.56.409 　

ISSN： 0525-1931

Annealing-time dependence in interfacial reaction between poly-Si electrode and HfO2/Si gate stack studied by synchrotron radiation photoemission and x-ray absorption spectroscopy (vol 89, art no 012102, 2006) Peer-reviewed

H. Takahashi, J. Okabayashi, S. Toyoda, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

APPLIED PHYSICS LETTERS　89　(16)　2006/10

DOI： 10.1063/1.2364452 　

ISSN： 0003-6951

Crystal structures and band offsets of ultrathin HfO2-Y2O3 composite films studied by photoemission and x-ray absorption spectroscopies Peer-reviewed

M. Komatsu, R. Yasuhara, H. Takahashi, S. Toyoda, H. Kumigashira, M. Oshima, D. Kukuruznyak, T. Chikyow

APPLIED PHYSICS LETTERS　89　(17)　2006/10

DOI： 10.1063/1.2364601 　

ISSN： 0003-6951

Composition dependence of band offsets for (LaAlO3)(1-x)(Al2O3)(x) gate dielectrics determined by photoelectron spectroscopy and x-ray absorption spectroscopy Peer-reviewed

R. Yasuhara, M. Komatsu, H. Takahashi, S. Toyoda, J. Okabayashi, H. Kumigashira, M. Oshima, D. Kukuruznyak, T. Chikyow

APPLIED PHYSICS LETTERS　89　(12)　2006/09

DOI： 10.1063/1.2356377 　

ISSN： 0003-6951

Observation of step-induced magnetic domain formation in La1-xSrxMnO3 thin films by photoelectron emission microscopy Peer-reviewed

T. Taniuchi, H. Kumigashira, M. Oshima, T. Wakita, T. Yokoya, M. Kubota, K. Ono, H. Akinaga, M. Lippmaa, M. Kawasaki, H. Koinuma

APPLIED PHYSICS LETTERS　89　(11)　2006/09

DOI： 10.1063/1.2347895 　

ISSN： 0003-6951

Strong localization of doped holes in La1-xSrxFeO3 from angle-resolved photoemission spectra Peer-reviewed

H. Wadati, A. Chikamatsu, M. Takizawa, R. Hashimoto, H. Kumigashira, T. Yoshida, T. Mizokawa, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

PHYSICAL REVIEW B　74　(11)　2006/09

DOI： 10.1103/PhysRevB.74.115114 　

ISSN： 1098-0121

Angle-resolved photoemission spectroscopy of perovskite-type transition-metal oxides and their analyses using tight-binding band structure Peer-reviewed

H. Wadati, T. Yoshida, A. Chikamatsu, H. Kumigashira, M. Oshima, H. Eisaki, Z. X. Shen, T. Mizokawa, A. Fujimori

Phase Transitions　79　(8)　617-635　2006/08/01

DOI： 10.1080/01411590600826672 　

ISSN： 0141-1594 1029-0338

Band offsets and chemical bonding states in N-plasma-treated HfSiON gate stacks studied by photoelectron spectroscopy and x-ray absorption spectroscopy Peer-reviewed

M. Oshima, H. Takahashi, J. Okabayashi, S. Toyoda, H. Kumigashira, M. Inoue, M. Mizutani, J. Yugami

JOURNAL OF APPLIED PHYSICS　100　(3)　2006/08

DOI： 10.1063/1.2219694 　

ISSN： 0021-8979

Angle-resolved photoemission spectroscopy of perovskite-type transition-metal oxides and their analyses using tight-binding band structure Peer-reviewed

H. Wadati, T. Yoshida, A. Chikamatsu, H. Kumigashira, M. Oshima, H. Eisaki, Z. -X. Shen, T. Mizokawa, A. Fujimori

PHASE TRANSITIONS　79　(8)　617-635　2006/08

DOI： 10.1080/01411590600826672 　

ISSN： 0141-1594

Photoemission from buried interfaces in SrTiO3/LaTiO3 superlattices Peer-reviewed

M. Takizawa, H. Wadati, K. Tanaka, M. Hashimoto, T. Yoshida, A. Fujimori, A. Chikamatsu, H. Kumigashira, M. Oshima, K. Shibuya, T. Mihara, T. Ohnishi, M. Lippmaa, M. Kawasaki, H. Koinuma, S. Okamoto, A. J. Millis

PHYSICAL REVIEW LETTERS　97　(5)　2006/08

DOI： 10.1103/PhysRevLett.97.057601 　

ISSN： 0031-9007

Chemical potential shift and spectral-weight transfer in Pr1-xCaxMnO3 revealed by photoemission spectroscopy Peer-reviewed

K. Ebata, H. Wadati, M. Takizawa, A. Fujimori, A. Chikamatsu, H. Kumigashira, M. Oshima, Y. Tomioka, Y. Tokura

PHYSICAL REVIEW B　74　(6)　2006/08

DOI： 10.1103/PhysRevB.74.064419 　

ISSN： 2469-9950

eISSN： 2469-9969

Annealing-time dependence in interfacial reaction between poly-Si electrode and HfO2/Si gate stack studied by synchrotron radiation photoemission and x-ray absorption spectroscopy Peer-reviewed

H. Takahashi, J. Okabayashi, S. Toyoda, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

APPLIED PHYSICS LETTERS　89　(1)　2006/07

DOI： 10.1063/1.2219126 　

ISSN： 0003-6951

eISSN： 1077-3118

Mechanism of Hf-silicide formation at interface between poly-Si electrode and HfO2/Si gate stacks studied by photoemission and x-ray absorption spectroscopy Peer-reviewed

H Takahashi, J Okabayashi, S Toyoda, H Kumigashira, M Oshima, K Ikeda, GL Liu, Z Liu, K Usuda

JOURNAL OF APPLIED PHYSICS　99　(11)　2006/06

DOI： 10.1063/1.2206610 　

ISSN： 0021-8979

Temperature-dependent soft X-ray photoemission and absorption studies of charge disproportionation in La1-xSrxFeO3 Peer-reviewed

Hiroki Wadati, Akira Chikamatsu, Ryuji Hashimoto, Masaru Takizawa, Hiroshi Kumigashira, Atsushi Fujimori, Mikk Lippmaa, Masashi Kawasaki, Hideomi Koinuma

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　75　(5)　2006/05

DOI： 10.1143/JPSJ.75.054704 　

ISSN： 0031-9015

Band structure and Fermi surface of La0.6Sr0.4MnO3 thin films studied by in situ angle-resolved photoemission spectroscopy Peer-reviewed

A. Chikamatsu, H. Wadati, H. Kumigashira, M. Oshima, A. Fujimori, N. Hamada, T. Ohnishi, M. Lippmaa, K. Ono, M. Kawasaki, H. Koinuma

PHYSICAL REVIEW B　73　(19)　2006/05

DOI： 10.1103/PhysRevB.73.195105 　

ISSN： 1098-0121

Robust Ti4+ states in SrTiO3 layers of La0.6Sr0.4MnO3/SrTiO3/La0.6Sr0.4MnO3 junctions Peer-reviewed

H Kumigashira, A Chikamatsu, R Hashimoto, M Oshima, T Ohnishi, M Lippmaa, H Wadati, A Fujimori, K Ono, M Kawasaki, H Koinuma

APPLIED PHYSICS LETTERS　88　(19)　2006/05

DOI： 10.1063/1.2202118 　

ISSN： 0003-6951

Ferromagnetism stabilization of ultrathin SrRuO(3) films: Thickness-dependent physical properties Peer-reviewed

D. Toyota, I. Ohkubo, H. Kumigashira, M. Oshima, T. Ohnishi, M. Lippmaa, M. Kawasaki, H. Koinuma

JOURNAL OF APPLIED PHYSICS　99　(8)　2006/04

DOI： 10.1063/1.2165140 　

ISSN： 0021-8979

In situ resonant photoemission characterization of La0.6Sr0.4MnO3 layers buried in insulating perovskite oxides Peer-reviewed

H Kumigashira, R Hashimoto, A Chikamatsu, M Oshima, T Ohnishi, M Lippmaa, H Wadati, A Fujimori, K Ono, M Kawasaki, H Koinuma

JOURNAL OF APPLIED PHYSICS　99　(8)　2006/04

DOI： 10.1063/1.2163827 　

ISSN： 0021-8979

Interfacial reaction in ZrO2/Si gate-stack structure probed by photoemission spectroscopy combined with combinatorial annealing system Peer-reviewed

J. Okabayashi, S. Toyoda, H. Takahashi, H. Kumigashira, M. Oshima, K. Ikeda, G. L. Liu, Z. Liu, K. Usuda

e-Journal of Surface Science and Nanotechnology　4　263-266　2006/02/24

DOI： 10.1380/ejssnt.2006.263 　

ISSN： 1348-0391

Chemical potential shift and spectral-weight transfer in Pr1-x Cax Mn O3 revealed by photoemission spectroscopy Peer-reviewed

K. Ebata, H. Wadati, M. Takizawa, A. Fujimori, A. Chikamatsu, H. Kumigashira, M. Oshima, Y. Tomioka, Y. Tokura

Physical Review B - Condensed Matter and Materials Physics　74　(6)　2006

DOI： 10.1103/PhysRevB.74.064419 　

ISSN： 1098-0121 1550-235X

Annealing-temperature dependence: Mechanism of Hf silicidation in HfO2 gate insulators on Si by core-level photoemission spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Takahashi, H Kumigashira, M Oshima, M Niwa, K Usuda, GL Liu

JOURNAL OF APPLIED PHYSICS　99　(1)　2006/01

DOI： 10.1063/1.2150600 　

ISSN： 0021-8979

eISSN： 1089-7550

Crystallization and chemical structures with annealing in ZrO2 gate insulators studied by photoemission spectroscopy and X-ray absorption spectroscopy Peer-reviewed

J Okabayashi, S Toyoda, H Kumigashira, M Oshima, K Usuda, M Niwa, GL Liu

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A　23　(6)　1554-1557　2005/11

DOI： 10.1116/1.2049300 　

ISSN： 0734-2101

Valence changes associated with the metal-insulator transition in Bi1-xLaxNiO3 Peer-reviewed

H Wadati, M Takizawa, TT Tran, K Tanaka, T Mizokawa, A Fujimori, A Chikamatsu, H Kumigashira, M Oshima, S Ishiwata, M Azuma, M Takano

PHYSICAL REVIEW B　72　(15)　2005/10

DOI： 10.1103/PhysRevB.72.155103 　

ISSN： 1098-0121

Thickness-dependent electronic structure of ultrathin SrRuO3 films studied by in situ photoemission spectroscopy Peer-reviewed

D Toyota, Ohkubo, I, H Kumigashira, M Oshima, T Ohnishi, M Lippmaa, M Takizawa, A Fujimori, K Ono, M Kawasaki, H Koinuma

APPLIED PHYSICS LETTERS　87　(16)　2005/10

DOI： 10.1063/1.2108123 　

ISSN： 0003-6951

eISSN： 1077-3118

Precise determination of band offsets and chemical states in SiN/Si studied by photoemission spectroscopy and x-ray absorption spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, GL Liu, Z Liu, K Ikeda, K Usuda

APPLIED PHYSICS LETTERS　87　(10)　2005/09

DOI： 10.1063/1.2035894 　

ISSN： 0003-6951

Manifestation of correlation effects in the photoemission spectra of Ca1-xSrxRuO3 Peer-reviewed

M Takizawa, D Toyota, H Wadati, A Chikamatsu, H Kumigashira, A Fujimori, M Oshima, Z Fang, M Lippmaa, M Kawasaki, H Koinuma

PHYSICAL REVIEW B　72　(6)　2005/08

DOI： 10.1103/PhysRevB.72.060404 　

ISSN： 1098-0121

Novel metallic ferromagnet Sr2CoO4 Peer-reviewed

J Matsuno, Y Okimoto, Z Fang, XZ Yu, Y Matsui, N Nagaosa, H Kumigashira, M Oshima, M Kawasaki, Y Tokura

THIN SOLID FILMS　486　(1-2)　113-116　2005/08

DOI： 10.1016/j.tsf.2004.10.055 　

ISSN： 0040-6090

Chemical reaction at the interface between polycrystalline Si electrodes and HfO2/Si gate dielectrics by annealing in ultrahigh vacuum Peer-reviewed

H Takahashi, S Toyoda, J Okabayashi, H Kumigashira, M Oshima, Y Sugita, GL Liu, Z Liu, K Usuda

APPLIED PHYSICS LETTERS　87　(1)　2005/07

DOI： 10.1063/1.1984091 　

ISSN： 0003-6951

Sr surface segregation and water cleaning for atomically controlled SrTiO3(001) substrates studied by photoemission spectroscopy Peer-reviewed

D Kobayashi, R Hashimoto, A Chikamatsu, H Kumigashira, M Oshima, T Ohnishi, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　443-446　2005/06

DOI： 10.1016/j.elspec.2005.01.167 　

ISSN： 0368-2048

eISSN： 1873-2526

Chemical analysis of Hf-silicide clusters studied by photoemission spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, K Ono, M Niwa, K Usuda, GL Liu

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　487-490　2005/06

DOI： 10.1016/j.elspec.2005.01.045 　

ISSN： 0368-2048

eISSN： 1873-2526

In situ angle-resolved photoemission study on La1-xSrxMnO3 thin films grown by laser MBE Peer-reviewed

A Chikamatsu, H Wadati, M Takizawa, R Hashimoto, H Kumigashira, M Oshima, A Fujimori, N Hamada, T Ohnishi, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　511-514　2005/06

DOI： 10.1016/j.elspec.2005.01.024 　

ISSN： 0368-2048

Spectral evidence for inherent "dead layer" formation at La1-ySryFeO3/La1-xSrxMnO3 heterointerface Peer-reviewed

R Hashimoto, A Chikamatsu, H Kumigashira, M Oshima, N Nakagawa, T Ohnishi, A Lippmaa, H Wadati, A Fujimori, K Ono, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　479-481　2005/06

DOI： 10.1016/j.elspec.2005.01.081 　

ISSN： 0368-2048

eISSN： 1873-2526

Hard X-ray photoemission study of Mn 2p core-levels of La1-xSrxMnO3 thin films Peer-reviewed

K Horiba, M Taguchi, N Kamakura, K Yamamoto, A Chainani, Y Takata, E Ikenaga, H Namatame, A Taniguchi, A Awaji, A Takeuchi, D Miwa, Y Nishino, K Tamasaku, T Ishikawa, H Kumigashira, M Oshima, M Lippmaa, M Kawasaki, H Koinuma, K Kobayashi, S Shin

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　557-559　2005/06

DOI： 10.1016/j.elspec.2005.01.008 　

ISSN： 0368-2048

eISSN： 1873-2526

In situ photoemission study of La1-xSrxFeO3 epitaxial thin films Peer-reviewed

H Wadati, D Kobayashi, A Chikamatsu, R Hashimoto, M Takizawa, K Horiba, H Kumigashira, T Mizokawa, A Fujimori, M Oshima, M Lippmaa, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　144　877-880　2005/06

DOI： 10.1016/j.elspec.2005.01.166 　

ISSN： 0368-2048

Crystallization in HfO2 gate insulators with in situ annealing studied by valence-band photoemission and x-ray absorption spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, K Yamashita, M Niwa, K Usuda, GL Liu

JOURNAL OF APPLIED PHYSICS　97　(10)　2005/05

DOI： 10.1063/1.1899228 　

ISSN： 0021-8979

eISSN： 1089-7550

In vacuo photoemission study of atomically controlled La1-xSrxMnO3 thin films: Composition dependence of the electronic structure Peer-reviewed

K Horiba, A Chikamatsu, H Kumigashira, M Oshima, N Nakagawa, M Lippmaa, K Ono, M Kawasaki, H Koinuma

PHYSICAL REVIEW B　71　(15)　2005/04

DOI： 10.1103/PhysRevB.71.155420 　

ISSN： 1098-0121

Hole-doping-induced changes in the electronic structure of La1-xSrxFeO3: Soft x-ray photoemission and absorption study of epitaxial thin films Peer-reviewed

H Wadati, D Kobayashi, H Kumigashira, K Okazaki, T Mizokawa, A Fujimori, K Horiba, M Oshima, N Hamada, M Lippmaa, M Kawasaki, H Koinuma

PHYSICAL REVIEW B　71　(3)　2005/01

DOI： 10.1103/PhysRevB.71.035108 　

ISSN： 1098-0121

High-resolution synchrotron-radiation photoemission characterization for atomically-controlled SrTiO3(001) substrate surfaces subjected to various surface treatments Peer-reviewed

D Kobayashi, H Kumigashira, M Oshima, T Ohnishi, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF APPLIED PHYSICS　96　(12)　7183-7188　2004/12

DOI： 10.1063/1.1814175 　

ISSN： 0021-8979

Chemical reaction and metallic cluster formation by annealing-temperature control in ZrO2 gate dielectrics on Si Peer-reviewed

J Okabayashi, S Toyoda, H Kumigashira, M Oshima, K Usuda, M Niwa, GL Liu

APPLIED PHYSICS LETTERS　85　(24)　5959-5961　2004/12

DOI： 10.1063/1.1835001 　

ISSN： 0003-6951

Nature of the well screened state in hard X-ray Mn 2p core-level photoemission measurements of La1-xSrxMnO3 films Peer-reviewed

K Horiba, M Taguchi, A Chainani, Y Takata, E Ikenaga, D Miwa, Y Nishino, K Tamasaku, M Awaji, A Takeuchi, M Yabashi, H Namatame, M Taniguchi, H Kumigashira, M Oshima, M Lippmaa, M Kawasaki, H Koinuma, K Kobayashi, T Ishikawa, S Shin

PHYSICAL REVIEW LETTERS　93　(23)　2004/12

DOI： 10.1103/PhysRevLett.93.236401 　

ISSN： 0031-9007

Photoemission and x-ray absorption study of the two-dimensional triangular lattice superconductor Na<inf>0.35</inf>CoO<inf>2</inf>·1.3H<inf>2</inf>O Peer-reviewed

Masato Kubota, Kazunori Takada, Takayoshi Sasaki, Hiroshi Kumigashira, Jun Okabayashi, Masaharu Oshima, Motohiro Suzuki, Naomi Kawamura, Masafumi Takagaki, Katsutoshi Fukuda, Kanta Ono

Physical Review B - Condensed Matter and Materials Physics　70　(1)　2004/07

DOI： 10.1103/PhysRevB.70.012508 　

ISSN： 0163-1829

Preparation of thermally stable TiO2-terminated SrTiO3(100) substrate surfaces Peer-reviewed

T Ohnishi, K Shibuya, M Lippmaa, D Kobayashi, H Kumigashira, M Oshima, H Koinuma

APPLIED PHYSICS LETTERS　85　(2)　272-274　2004/07

DOI： 10.1063/1.1771461 　

ISSN： 0003-6951

Chemistry and band offsets of HfO2 thin films on Si revealed by photoelectron spectroscopy and x-ray absorption spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, K Ono, M Niwa, K Usuda, N Hirashita

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　137　141-144　2004/07

DOI： 10.1016/j.elspec.2004.02.083 　

ISSN： 0368-2048

In situ photoelectron spectroscopy of LaMnO3 and La0.6Sr0.4MnO3 thin films grown by laser molecular beam expitaxy Peer-reviewed

M Oshima, D Kobayashi, K Horiba, H Ohguchi, H Kumigashira, K Ono, N Nakagawa, M Lippmaa, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　137　145-149　2004/07

DOI： 10.1016/j.elspec.2004.02.111 　

ISSN： 0368-2048

Photoemission and x-ray absorption study of the two-dimensional triangular lattice superconductor Na0.35CoO2 center dot 1.3H(2)O Peer-reviewed

M Kubota, K Takada, T Sasaki, H Kumigashira, J Okabayashi, M Oshima, M Suzuki, N Kawamura, M Takagaki, K Fukuda, K Ono

PHYSICAL REVIEW B　70　(1)　2004/07

DOI： 10.1103/PhysRevB.70.012508 　

ISSN： 1098-0121

Inherent charge transfer layer formation at La0.6Sr0.4FeO3/La0.6Sr0.4MnO3 heterointerface Peer-reviewed

H Kumigashira, D Kobayashi, R Hashimoto, A Chikamatsu, M Oshima, N Nakagawa, T Ohnishi, M Lippmaa, H Wadati, A Fujimori, K Ono, M Kawasaki, H Koinuma

APPLIED PHYSICS LETTERS　84　(26)　5353-5355　2004/06

DOI： 10.1063/1.1766405 　

ISSN： 0003-6951

In situ photoemission spectroscopic study on La1-xSrMnO3 thin films grown by combinatorial laser-MBE Peer-reviewed

H Kumigashira, K Horiba, H Ohguchi, D Kobayashi, M Oshima, N Nakagawa, T Ohnishi, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　136　(1-2)　31-36　2004/05

DOI： 10.1016/j.elspec.2004.02.153 　

ISSN： 0368-2048

Ultrahigh-resolution angle-resolved photoemission studyof LaX (X = S, Se, Te) Peer-reviewed

M. Nakayama, T. Ito, H. Kumigashira, H. Matsui, H. Komatsu, T. Takahashi, H. Aoki, A. Ochiai

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　272　E121-E122　2004/05

DOI： 10.1016/j.jmmm.2003.12.1254 　

ISSN： 0304-8853

In situ Mn 2p-3d resonant photoemission study on La0.6Sr0.4MnO3 epitaxial thin films grown by laser MBE Peer-reviewed

K Horiba, H Ohguchi, D Kobayashi, H Kumigashira, M Oshima, N Nakagawa, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　272　436-437　2004/05

DOI： 10.1016/j.jmmm.2003.11.145 　

ISSN： 0304-8853

In situ synchrotron-radiation study on La0.6Sr0.4MnO3 thin angle-resolved photoemission films grown by laser molecular beam epitaxy Peer-reviewed

H Kumigashira, K Horiba, H Ohguchi, M Oshima, N Nakagawa, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　272　434-435　2004/05

DOI： 10.1016/j.jmmm.2003.12.1255 　

ISSN： 0304-8853

Surface electronic structures of terminating-layer-controlled La0.6Sr0.4MnO3 thin films studied by in situ synchrotron-radiation photoemission spectroscopy Peer-reviewed

H Kumigashira, K Horiba, H Ohguchi, M Oshima, N Nakagawa, M Lippmaa, K Ono, M Kawasaki, H Koinuma

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　272　1120-1121　2004/05

DOI： 10.1016/j.jmmm.2003.12.1172 　

ISSN： 0304-8853

Ultrahigh-resolution angle-resolved photoemission spectroscopy of La and Ce monochalcogenides Peer-reviewed

M. Nakayama, H. Aoki, A. Ochiai, T. Ito, H. Kumigashira, T. Takahashi, H. Harima

Physical Review B - Condensed Matter and Materials Physics　69　(15)　1-155116　2004/04

DOI： 10.1103/PhysRevB.69.155116 　

ISSN： 0163-1829

Ultrahigh-resolution angle-resolved photoemission spectroscopy of La and Ce monochalcogenides Peer-reviewed

M Nakayama, H Aoki, A Ochiai, T Ito, H Kumigashira, T Takahashi, H Harima

PHYSICAL REVIEW B　69　(15)　2004/04

DOI： 10.1103/PhysRevB.69.155116 　

ISSN： 1098-0121

Effects of interlayer and annealing on chemical states of HfO2 gate insulators studied by photoemission spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, K Ono, M Niwa, K Usuda, GL Liu

APPLIED PHYSICS LETTERS　84　(13)　2328-2330　2004/03

DOI： 10.1063/1.1689393 　

ISSN： 0003-6951

eISSN： 1077-3118

Chemical states and band offsets of NH(3)-treated Si oxynitride films studied by high-resolution photoelectron spectroscopy Peer-reviewed

M Oshima, S Toyoda, J Okabayashi, H Kumigashira, K Ono, M Niwa, K Usuda, N Hirashita

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A　22　(1)　176-180　2004/01

DOI： 10.1116/1.1635389 　

ISSN： 0734-2101

Effect of nitrogen doping into SiO2 studied by photoemission spectroscopy Peer-reviewed

S Toyoda, J Okabayashi, H Kumigashira, M Oshima, K Ono, M Niwa, K Usuda, N Hirashita

APPLIED PHYSICS LETTERS　83　(26)　5449-5451　2003/12

DOI： 10.1063/1.1633977 　

ISSN： 0003-6951

Chemistry and band offsets of HfO2 thin films for gate insulators Peer-reviewed

M Oshima, S Toyoda, T Okumura, J Okabayashi, H Kumigashira, K Ono, M Niwa, K Usuda, N Hirashita

APPLIED PHYSICS LETTERS　83　(11)　2172-2174　2003/09

DOI： 10.1063/1.1611272 　

ISSN： 0003-6951

A high-resolution synchrotron-radiation angle-resolved photoemission spectrometer with in situ oxide thin film growth capability Peer-reviewed

K Horiba, H Ohguchi, H Kumigashira, M Oshima, K Ono, N Nakagawa, M Lippmaa, M Kawasaki, H Koinuma

REVIEW OF SCIENTIFIC INSTRUMENTS　74　(7)　3406-3412　2003/07

DOI： 10.1063/1.1584093 　

ISSN： 0034-6748

Interfacial chemistry and structures of ultrathin Si oxynitride films Peer-reviewed

M Oshima, K Kimura, K Ono, K Horiba, K Nakamura, H Kumigashira, JH Oh, M Niwa, K Usuda, N Hirashita

APPLIED SURFACE SCIENCE　216　(1-4)　291-295　2003/06

DOI： 10.1016/S0169-4332(03)00430-6 　

ISSN： 0169-4332

In situ photoemission characterization of terminating-layer-controlled La0.6Sr0.4MnO3 thin films Peer-reviewed

H Kumigashira, K Horiba, H Ohguchi, K Ono, M Oshima, N Nakagawa, M Lippmaa, M Kawasaki, H Koinuma

APPLIED PHYSICS LETTERS　82　(20)　3430-3432　2003/05

DOI： 10.1063/1.1575932 　

ISSN： 0003-6951

Band structure of UPd3 studied by ultrahigh-resolution angle-resolved photoemission spectroscopy

T. Ito, H. Kumigashira, S. Souma, T. Takahashi, Y. Haga, Y. Tokiwa, Y. Onuki

Physical Review B - Condensed Matter and Materials Physics　66　(24)　2451101-2451106　2002/12/15

ISSN： 0163-1829

Band structure of UPd3 studied by ultrahigh-resolution angle-resolved photoemission spectroscopy Peer-reviewed

T Ito, H Kumigashira, S Souma, T Takahashi, Y Haga, Y Tokiwa, Y Onuki

PHYSICAL REVIEW B　66　(24)　2002/12

DOI： 10.1103/PhysRevB.66.245110 　

ISSN： 2469-9950

eISSN： 2469-9969

Electronic structure of black SmS. II. Angle-resolved photoemission spectroscopy

T. Ito, A. Chainani, H. Kumigashira, T. Takahashi, N. K. Sato

Physical Review B - Condensed Matter and Materials Physics　65　(15)　1552021-1552024　2002/04/15

ISSN： 0163-1829

Electronic structure of black SmS. I. 4d-4f resonance and angle-integrated valence-band photoemission spectroscopy Peer-reviewed

A. Chainani, H. Kumigashira, T. Ito, T. Sato, T. Takahashi, T. Yokoya, T. Higuchi, T. Takeuchi, S. Shin, N. K. Sato

Physical Review B - Condensed Matter and Materials Physics　65　(15)　1552011-1552017　2002/04/15

DOI： 10.1103/PhysRevB.65.155201 　

ISSN： 0163-1829

Electronic structure of black SmS. I. 4d-4f resonance and angle-integrated valence-band photoemission spectroscopy Peer-reviewed

A Chainani, H Kumigashira, T Ito, T Sato, T Takahashi, T Yokoya, T Higuchi, T Takeuchi, S Shin, NK Sato

PHYSICAL REVIEW B　65　(15)　2002/04

DOI： 10.1103/PhysRevB.65.155201 　

ISSN： 1098-0121

High-resolution angle-resolved photoemission study of eta-Mo4O11 Peer-reviewed

H Fujisawa, H Kumigashira, T Takahashi, R Kurita, M Koyano

SURFACE REVIEW AND LETTERS　9　(2)　1041-1045　2002/04

DOI： 10.1142/S0218625X02003317 　

ISSN： 0218-625X

High-resolution angle-resolved photoemission study of BaCo1-xNixS2 Peer-reviewed

T Sato, H Kumigashira, D Ionel, T Ito, T Takahashi, Hase, I, H Ding, JC Campuzano, S Shamoto

SURFACE REVIEW AND LETTERS　9　(2)　1127-1132　2002/04

DOI： 10.1142/S0218625X02003627 　

ISSN： 0218-625X

Electronic structure of black SmS. II. Angle-resolved photoemission spectroscopy Peer-reviewed

T Ito, A Chainani, H Kumigashira, T Takahashi, NK Sato

PHYSICAL REVIEW B　65　(15)　2002/04

DOI： 10.1103/PhysRevB.65.155202 　

ISSN： 1098-0121

Ultrahigh-resolution angle-resolved photoemission spectroscopy of UPd3 Peer-reviewed

T Ito, H Kumigashira, S Souma, T Takahashi, Y Tokiwa, Y Haga, Y Onuki

PHYSICA B-CONDENSED MATTER　312　653-654　2002/03

DOI： 10.1016/S0921-4526(01)01201-7 　

ISSN： 0921-4526

eISSN： 1873-2135

Hybridization gap in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy Peer-reviewed

H Kumigashira, T Takahashi, S Yoshii, M Kasaya

PHYSICA B-CONDENSED MATTER　312　208-209　2002/03

DOI： 10.1016/S0921-4526(01)01084-5 　

ISSN： 0921-4526

eISSN： 1873-2135

Direct observation of pseudogap of SmB6 using ultrahigh-resolution photoemission spectroscopy Peer-reviewed

S Souma, H Kumigashira, T Ito, T Takahashi, S Kunii

PHYSICA B-CONDENSED MATTER　312　329-330　2002/03

DOI： 10.1016/S0921-4526(01)01115-2 　

ISSN： 0921-4526

eISSN： 1873-2135

Resonant angle-resolved photoemission study of heavy fermion material CeRu2Si2 Peer-reviewed

H Kumigashira, T Ito, T Takahashi, A Kaminski, JC Campuzano, Y Onuki

PHYSICA B-CONDENSED MATTER　312　658-659　2002/03

DOI： 10.1016/S0921-4526(01)01216-9 　

ISSN： 0921-4526

eISSN： 1873-2135

Band structure of studied by ultrahigh-resolution angle-resolved photoemission spectroscopy Peer-reviewed

T. Ito, H. Kumigashira, S. Souma, T. Takahashi, Y. Haga, Y. Tokiwa, Y. Ōnuki

Physical Review B - Condensed Matter and Materials Physics　66　(24)　1-6　2002

DOI： 10.1103/PhysRevB.66.245110 　

ISSN： 1550-235X 1098-0121

Ultrahigh-resolution photoernission spectroscopy on UGe2 Peer-reviewed

Takahiro Ito, Hiroshi Kumigashira, Seigo Souma, Takashi Takahashi, Yoshinori Haga, Yoshichika Onuki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　71　261-263　2002/01

DOI： 10.1143/JPSJS.71S.261 　

ISSN： 0031-9015

Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo1-xNixS2 Peer-reviewed

T. Sato, H. Kumigashira, D. Ionel, T. Takahashi, I. Hase, H. Ding, J. C. Campuzano, S. Shamoto

Physical Review B - Condensed Matter and Materials Physics　64　(7)　751031-751036　2001/08/15

DOI： 10.1103/PhysRevB.64.075103 　

ISSN： 0163-1829

Evolution of metallic states from the Hubbard band in the two-dimensional Mott system BaCo1-xNixS2 Peer-reviewed

T Sato, H Kumigashira, D Ionel, T Takahashi, Hase, I, H Ding, JC Campuzano, S Shamoto

PHYSICAL REVIEW B　64　(7)　2001/08

DOI： 10.1103/PhysRevB.64.075103 　

ISSN： 1098-0121

eISSN： 1550-235X

Hybridized nature of pseudogap in Kondo insulators CeRhSb and CeRhAs Peer-reviewed

H Kumigashira, T Takahashi, S Yoshii, M Kasaya

PHYSICAL REVIEW LETTERS　87　(6)　2001/08

DOI： 10.1103/PhysRevLett.87.067206 　

ISSN： 0031-9007

Electronic structure and Fermi surface of UC studied by high-resolution angle-resolved photoemission spectroscopy Peer-reviewed

T Ito, H Kumigashira, T Takahashi, E Yamamoto, Y Haga, Y Onuki

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　226　40-41　2001/05

DOI： 10.1016/S0304-8853(00)00743-5 　

ISSN： 0304-8853

High-resolution angle-resolved photoemission study of UN and USb; Dual character of 5f electrons Peer-reviewed

T Ito, H Kumigashira, S Souma, T Takahashi, T Suzuki

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　226　68-69　2001/05

DOI： 10.1016/S0304-8853(00)00631-4 　

ISSN： 0304-8853

Angle-resolved photoemission study of quasi one-dimensional conductor Nb3Te4 Peer-reviewed

H Fujisawa, H Kumigashira, T Takahashi, H Kaneko, Y Ishihara, H Okamoto

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　114　647-652　2001/03

DOI： 10.1016/S0368-2048(00)00321-2 　

ISSN： 0368-2048

Ultrahigh-resolution photoemission study of CePd3: absence of Kondo insulator gap Peer-reviewed

S Souma, H Kumigashira, T Ito, T Takahashi, M Kasaya

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　114　735-740　2001/03

DOI： 10.1016/S0368-2048(00)00386-8 　

ISSN： 0368-2048

Crystal-field splitting in CeB6 observed by ultrahigh-resolution photoemission spectroscopy Peer-reviewed

S Souma, H Kumigashira, T Ito, T Sato, T Takahashi, S Kunii

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　114　729-734　2001/03

DOI： 10.1016/S0368-2048(00)00384-4 　

ISSN： 0368-2048

Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy Peer-reviewed

H Kumigashira, T Sato, T Yokoya, T Takahashi, S Yoshii, M Kasaya

PHYSICA B　281　284-285　2000/06

DOI： 10.1016/S0921-4526(99)00827-3 　

ISSN： 0921-4526

Electronic band structure and Fermi surface of URu2Si2 studied by high-resolution angle-resolved photoemission spectroscopy Peer-reviewed

T Ito, H Kumigashira, T Takahashi, Y Haga, E Yamamoto, T Honma, H Ohkuni, Y Onuki

PHYSICA B　281　727-728　2000/06

DOI： 10.1016/S0921-4526(99)00821-2 　

ISSN： 0921-4526

High-resolution angle-resolved photoemission study of USb: Dual character of 5f electrons Peer-reviewed

H Kumigashira, T Ito, A Ashihara, HD Kim, H Aoki, T Suzuki, H Yamagami, T Takahashi, A Ochiai

PHYSICAL REVIEW B　61　(23)　15707-15713　2000/06

DOI： 10.1103/PhysRevB.61.15707 　

ISSN： 1098-0121

eISSN： 1550-235X

High-Resolution Angle-Resolved Photoemission Study of URu₂Si₂ Peer-reviewed

T. Ito, H. Kumigashira, T. Takahashi, Y. Haga, E. Yamamoto, T. Honma, J. Ohkuni, Y. Onuki

Japanese Journal of Applied Physics series　11　68-70　1999/12

Ultrahigh-Resolution Photoemission Study of Kondo Insulators CeRhAs and CeRhSb Peer-reviewed

H. Kumigashira, T. Sato, T. Yokoya, T. Takahashi, S. Yoshii, M. Kasaya

Japanese Journal of Applied Physics series　11　91-93　1999/12

Band structure and Fermi surface of URu2Si2 studied by high-resolution angle-resolved photoemission spectroscopy Peer-reviewed

T Ito, H Kumigashira, T Takahashi, Y Haga, E Yamamoto, T Honma, H Ohkuni, Y Onuki

PHYSICAL REVIEW B　60　(19)　13390-13395　1999/11

DOI： 10.1103/PhysRevB.60.13390 　

ISSN： 1098-0121

eISSN： 1550-235X

Surface and bulk 4f photoemission spectra of CeIr2 Peer-reviewed

HD Kim, H Kumigashira, SH Yang, T Takahashi, H Aoki, T Suzuki, G Chiaia, O Tjernberg, H Nylen, Lindau, I, A Ochiai

PHYSICAL REVIEW B　59　(19)　12294-12297　1999/05

DOI： 10.1103/PhysRevB.59.12294 　

ISSN： 1098-0121

eISSN： 1550-235X

High-resolution angle-resolved photoemission study of the heavy-fermion superconductor UPt3 Peer-reviewed

T Ito, H Kumigashira, HD Kim, T Takahashi, N Kimura, Y Haga, E Yamamoto, Y Onuki, H Harima

PHYSICAL REVIEW B　59　(13)　8923-8929　1999/04

DOI： 10.1103/PhysRevB.59.8923 　

ISSN： 1098-0121

eISSN： 1550-235X

Spectral evidence for pseudogap formation in Kondo insulators CeRhAs and CeRhSb Peer-reviewed

H Kumigashira, T Sato, T Yokoya, T Takahashi, S Yoshii, M Kasaya

PHYSICAL REVIEW LETTERS　82　(9)　1943-1946　1999/03

DOI： 10.1103/PhysRevLett.82.1943 　

ISSN： 0031-9007

Surface and bulk (formula presented) photoemission spectra of (formula presented) Peer-reviewed

H. Kim, H. Kumigashira, S. Yang, T. Takahashi, H. Aoki, T. Suzuki

Physical Review B - Condensed Matter and Materials Physics　59　(19)　12294-12297　1999

DOI： 10.1103/PhysRevB.59.12294 　

ISSN： 1550-235X 1098-0121

Angle-resolved photoemission spectroscopy of UPt3 Peer-reviewed

T Ito, H Kumigashira, HD Kim, T Takahashi, N Kimura, Y Haga, E Yamamoto, Y Onuki, H Harima

PHYSICA B-CONDENSED MATTER　259-61　1122-1123　1999/01

DOI： 10.1016/S0921-4526(98)01032-1 　

ISSN： 0921-4526

High-resolution angle-resolved photoemission study of RSb (R = La, Ce, U) Peer-reviewed

H Kumigashira, HD Kim, T Ito, A Ashihara, T Takahashi, H Aoki, A Ochiai, T Suzuki

PHYSICA B-CONDENSED MATTER　259-61　1124-1125　1999/01

DOI： 10.1016/S0921-4526(98)01033-3 　

ISSN： 0921-4526

Metallic-covalent bonding conversion in Alminum-based and Boron-based icosahedral cluster solids Peer-reviewed

K. Kimura, H. Matsuda, M. Fujimori, M. Terauchi, M. Tanaka, H. Kumigashira, T. Yokoya, T. Takahashi

Proc. 6th Int. Conf. Quasicrystals　595-598　1998/12

Electronic structure of AlCuRu quasicrystal and the 1/1 cubic approximant Peer-reviewed

K. Kirihara, K. Kimura, H. Ino, H. Kumigashira, A. Ashihara, T. Takahashi

Proc. 6th Int. Conf. Quasicrystals　651-654　1998/12

High-resolution angle-resolved photoemission study of LaSb Peer-reviewed

H Kumigashira, HD Kim, T Ito, A Ashihara, T Takahashi, T Suzuki, M Nishimura, D Sakai, Y Kaneta, H Harima

PHYSICAL REVIEW B　58　(12)　7675-7680　1998/09

DOI： 10.1103/PhysRevB.58.7675 　

ISSN： 1098-0121

eISSN： 1550-235X

Resonant photoemission studies of thulium monochalcogenides around the Tm 4d threshold Peer-reviewed

Y Ufuktepe, S Kimura, T Kinoshita, KG Nath, H Kumigashira, T Takahashi, T Matsumura, T Suzuki, H Ogasawara, A Kotani

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　67　(6)　2018-2026　1998/06

DOI： 10.1143/JPSJ.67.2018 　

ISSN： 0031-9015

Performance of the YB66 soft X-ray monochromator crystal at the wiggler beamline of the UVSOR facility Peer-reviewed

Toyohiko Kinoshita, Yasutaka Takata, Tokuo Matsukawa, Hirofumi Aritani, Shigehiro Matsuo, Takashi Yamamoto, Masao Takahashi, Hisao Yoshida, Tomoko Yoshida, Yüksel Ufuktepe, Krishna G. Nath, Shin-Ichi Kimura, Yoshinori Kitajima

Journal of Synchrotron Radiation　5　(3)　726-728　1998/05/01

DOI： 10.1107/S0909049597017159 　

ISSN： 0909-0495

High-resolution angle-resolved photoemission study of CeSb and USb Peer-reviewed

T Takahashi, H Kumigashira, T Ito, A Ashihara, HD Kim, H Aoki, A Ochiai, T Suzuki

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　92　(1-3)　65-69　1998/05

DOI： 10.1016/S0368-2048(98)00102-9 　

ISSN： 0368-2048

Electronic structure of CeSe probed by resonant photoemission spectroscopy: A test case for the single-impurity Anderson Hamiltonian Peer-reviewed

G Chiaia, L Duo, O Tjernberg, M Gothelid, M Bjorkqvist, H Kumigashira, SH Yang, T Takahashi, T Suzuki, Lindau, I

PHYSICAL REVIEW B　57　(19)　12030-12035　1998/05

DOI： 10.1103/PhysRevB.57.12030 　

ISSN： 1098-0121

eISSN： 1550-235X

Resonant photoemission studies of thulium monochalcogenides around the Tm 3d threshold Peer-reviewed

T Kinoshita, Y Ufuktepe, KG Nath, S Kimura, H Kumigashira, T Takahashi, T Matsumura, T Suzuki, H Ogasawara, A Kotani

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　88　377-384　1998/03

DOI： 10.1016/S0368-2048(97)00184-9 　

ISSN： 0368-2048

4d core-level resonant photoemission spectroscopy of thulium monochalcogenides around the Tm 3d threshold Peer-reviewed

KG Nath, Y Ufuktepe, S Kimura, T Kinoshita, H Kumigashira, T Takahashi, T Matsumura, T Suzuki, H Ogasawara, A Kotani

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　88　369-375　1998/03

DOI： 10.1016/S0368-2048(97)00183-7 　

ISSN： 0368-2048

Surface and bulk 4f electronic structure of CeIn3 and CeSn3 Peer-reviewed

H Kumigashira, HD Kim, T Takahashi, O Sakai, M Kasaya, O Tjernberg, G Chiaia, L Duo, Lindau, I

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　177　1035-1036　1998/01

DOI： 10.1016/S0304-8853(97)00418-6 　

ISSN： 0304-8853

Magnetic phase transition of CeSb studied by high-resolution angle-resolved photoemission Peer-reviewed

T Takahashi, H Kumigashira, HD Kim, A Ashihara, A Chainani, T Yokoya, A Uesawa, T Suzuki

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　177　1027-1028　1998/01

DOI： 10.1016/S0304-8853(97)00440-X 　

ISSN： 0304-8853

4d-4f and 3d-4f resonant photoemission of TmX (X = S, Se, Te) Peer-reviewed

S Kimura, Y Ufuktepe, KG Nath, T Kinoshita, H Kumigashira, T Takahashi, T Matsumura, T Suzuki, H Ogasawara, A Kotani

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　177　349-350　1998/01

DOI： 10.1016/S0304-8853(97)00558-1 　

ISSN： 0304-8853

High-resolution photoemission study of V2-yO3 Peer-reviewed

HD Kim, H Kumigashira, A Ashihara, T Takahashi, Y Ueda

PHYSICAL REVIEW B　57　(3)　1316-1319　1998/01

DOI： 10.1103/PhysRevB.57.1316 　

ISSN： 1098-0121

eISSN： 1550-235X

Temperature dependence of the electronic structure of the charge-ordering manganite Pr0.5Sr0.5MnO3

A. Chainani, H. Kumigashira, T. Takahashi, Y. Tomioka, Hideki Kuwahara, Y. Tokura

Physical review. Third series. B, Condensed matter　56　(24)　15513-15516　1997/12/15

DOI： 10.1103/PhysRevB.56.R15513 　

ISSN： 0163-1829

Temperature dependence of the electronic structure of the charge-ordering manganite Pr0.5Sr0.5MnO3 Peer-reviewed

A Chainani, H Kumigashira, T Takahashi, Y Tomioka, H Kuwahara, Y Tokura

PHYSICAL REVIEW B　56　(24)　R15513-R15516　1997/12

DOI： 10.1103/PhysRevB.56.R15513 　

ISSN： 1098-0121

eISSN： 1550-235X

Paramagnetic-to-antiferroparamagnetic phase transition of CeSb studied by high-resolution angle-resolved photoemission Peer-reviewed

H Kumigashira, HD Kim, A Ashihara, A Chainani, T Yokoya, T Takahashi, A Uesawa, T Suzuki

PHYSICAL REVIEW B　56　(21)　13654-13657　1997/12

DOI： 10.1103/PhysRevB.56.13654 　

ISSN： 0163-1829

High-resolution angle-resolved photoemission study of Sr14-xCaxCu24O41 (x=0 and 6) Peer-reviewed

T Yokoya, HD Kim, A Ashihara, H Kumigashira, H Fujisawa, T Takahashi, M Uehara, T Nagata, J Akimitsu

PHYSICA C　282　997-998　1997/08

DOI： 10.1016/S0921-4534(97)00632-1 　

ISSN： 0921-4534

Surface and bulk 4f-photoemission spectra of CeIn3 and CeSn3 Peer-reviewed

HD Kim, O Tjernberg, G Chiaia, H Kumigashira, T Takahashi, L Duo, O Sakai, M Kasaya, Lindau, I

PHYSICAL REVIEW B　56　(3)　1620-1624　1997/07

DOI： 10.1103/PhysRevB.56.1620 　

ISSN： 1098-0121

High-resolution angle-resolved photoemission study of CeP: Narrow-band formation of 4f electrons Peer-reviewed

H Kumigashira, SH Yang, T Yokoya, A Chainani, T Takahashi, A Uesawa, T Suzuki

PHYSICAL REVIEW B　55　(6)　R3355-R3357　1997/02

DOI： 10.1103/PhysRevB.55.R3355 　

ISSN： 2469-9950

eISSN： 2469-9969

Paramagnetic-to-antiferroparamagnetic phase transition of CeSb studied by high-resolution angle-resolved photoemission Peer-reviewed

H. Kumigashira, H. Kim, A. Ashihara, A. Chainani, T. Yokoya, T. Takahashi, A. Uesawa, T. Suzuki

Physical Review B - Condensed Matter and Materials Physics　56　(21)　13654-13657　1997

DOI： 10.1103/PhysRevB.56.13654 　

ISSN： 1550-235X 1098-0121

High-resolution angle-resolved photoemission study of CeP: Narrow-band formation of 4f electrons Peer-reviewed

H. Kumigashira, S. Yang, T. Yokoya, A. Chainani, T. Takahashi, A. Uesawa, T. Suzuki

Physical Review B - Condensed Matter and Materials Physics　55　(6)　R3355-R3357　1997

DOI： 10.1103/PhysRevB.55.R3355 　

ISSN： 1550-235X 1098-0121

High-resolution angle-resolved photoemission spectroscopy of CeBi Peer-reviewed

H Kumigashira, SH Yang, T Yokoya, A Chainani, T Takahashi, A Uesawa, T Suzuki, O Sakai, Y Kaneta

PHYSICAL REVIEW B　54　(13)　9341-9345　1996/10

DOI： 10.1103/PhysRevB.54.9341 　

ISSN： 0163-1829

High-resolution photoemission study of UNi2Al3 and URu2Si2 Peer-reviewed

SH Yang, H Kumigashira, T Yokoya, A Chainani, T Takahashi, SJ Oh, N Sato, T Komatsubara

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　65　(8)　2685-2689　1996/08

DOI： 10.1143/JPSJ.65.2685 　

ISSN： 0031-9015

High-Resolution angle-resolved photoemission study of non cuprate two-dimensional superconductor Sr2RuO4 Peer-reviewed

T Yokoya, O Akaki, H Kumigashira, A Chainani, T Takahashi, H KatayamaYoshida, M Kasai, Y Tokura

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　78　171-174　1996/05

DOI： 10.1016/S0368-2048(96)80054-5 　

ISSN： 0368-2048

High-resolution photoemission study of UNi2Al3 and URu2Si2 Peer-reviewed

SH Yang, H Kumigashira, T Yokoya, A Chainani, N Sato, T Komatsubara, SJ Oh, T Takahashi

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　78　143-145　1996/05

DOI： 10.1016/S0368-2048(96)80047-8 　

ISSN： 0368-2048

High-resolution photoemission study of deutrated dimethyl-dicyanoquinonediimine-Cu compound; (DMe-DCNQI)2Cu Peer-reviewed

T Takahashi, T Yokoya, A Chainani, A Tanaka, H Kumigashira, O Akaki, R Kato

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　78　441-444　1996/05

DOI： 10.1016/S0368-2048(96)80118-6 　

ISSN： 0368-2048

High-resolution photoemission study of CeRu2: The dual character of 4f electrons Peer-reviewed

SH Yang, H Kumigashira, T Yokoya, A Chainani, T Takahashi, H Takeya, K Kadowaki

PHYSICAL REVIEW B　53　(18)　11946-11948　1996/05

DOI： 10.1103/PhysRevB.53.R11946 　

ISSN： 0163-1829

High-energy-resolution photoemission study of CeNiSi2 and CePtSi2 Peer-reviewed

H Kumigashira, A Chainani, T Yokoya, O Akaki, T Takahashi, M Ito, M Kasaya, O Sakai

PHYSICAL REVIEW B　53　(5)　2565-2568　1996/02

DOI： 10.1103/PhysRevB.53.2565 　

ISSN： 0163-1829

High-energy-resolution photoemission study of and Peer-reviewed

H. Kumigashira, A. Chainani, T. Yokoya, O. Akaki, T. Takahashi, M. Ito, M. Kasaya, O. Sakai

Physical Review B - Condensed Matter and Materials Physics　53　(5)　2565-2568　1996

DOI： 10.1103/PhysRevB.53.2565 　

ISSN： 1550-235X 1098-0121

High-resolution photoemission study of C: The dual character of electrons Peer-reviewed

S. H. Yang, H. Kumigashira, T. Yokoya, A. Chainani, T. Takahashi, H. Takeya

Physical Review B - Condensed Matter and Materials Physics　53　(18)　R11946-R11948　1996

DOI： 10.1103/PhysRevB.53.R11946 　

ISSN： 1550-235X 1098-0121

High-resolution angle-resolved photoemission spectroscopy of CeBi Peer-reviewed

H. Kumigashira, S. Yang, T. Yokoya, A. Chainani, T. Takahashi, A. Uesawa, T. Suzuki, O. Sakai, Y. Kaneta

Physical Review B - Condensed Matter and Materials Physics　54　(13)　9341-9345　1996

DOI： 10.1103/PhysRevB.54.9341 　

ISSN： 1550-235X 1098-0121

Cooperative effects of electron correlation and charge ordering on the metal-insulator transition in quasi-one-dimensional deuteratedCu Peer-reviewed

T. Takahashi, T. Yokoya, A. Chainani, H. Kumigashira, O. Akaki, R. Kato

Physical Review B - Condensed Matter and Materials Physics　53　(4)　1790-1794　1996

DOI： 10.1103/PhysRevB.53.1790 　

ISSN： 1550-235X 1098-0121

Cooperative effects of electron correlation and charge ordering on the metal-insulator transition in quasi-one-dimensional deuterated (DMe-DCNQI)(2)Cu Peer-reviewed

T Takahashi, T Yokoya, A Chainani, H Kumigashira, O Akaki, R Kato

PHYSICAL REVIEW B　53　(4)　1790-1794　1996/01

DOI： 10.1103/PhysRevB.53.1790 　

ISSN： 0163-1829