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工学博士 (The University of Tokyo)
Details of the Researcher
Research History 5
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2014/04 - Present東北大学 大学院理学研究科 物理学専攻 教授
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2012/04 - 2014/03東京大学 物性研究所 特任准教授
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2008/01 - 2012/03東京大学 物性研究所 特任講師
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2007/04 - 2008/01理化学研究所 基礎科学特別研究員
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2004/04 - 2007/03日本学術振興会 特別研究員
Professional Memberships 2
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アメリカ物理学会
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日本物理学会
Research Interests 4
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遷移金属化合物
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超伝導
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磁性
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強相関電子系
Research Areas 1
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Natural sciences / Magnetism, superconductivity, and strongly correlated systems /
Papers 133
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Orbital magnetic moments in FeCr2S4 studied by x-ray magnetic circular dichroism
V. K. Verma, J. Patra, V. R. Singh, Y. Nonaka, G. Shibata, K. Ishigami, A. Tanaka, K. Ohgushi, Y. Tokura, T. Koide, A. Fujimori
PHYSICAL REVIEW B 112 (10) 2025/09/29
DOI: 10.1103/hdzg-mn6r
ISSN: 2469-9950
eISSN: 2469-9969
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Separation of Magnetism and Orbital Order in Superconducting Iron-Ladders: Signature of Hund's Metallic State near Its Superconductivity
Kou Takubo, Kohei Yamamoto, Kota Murota, Naoki Moritsuna, Kohei Yamagami, Yasuyuki Hirata, Hiroki Wadati, Ronny Sutarto, Kazuki Hashizume, Satoshi Imaizumi, Takuya Aoyama, Yoshinori Imai, Kenya Ohgushi, Takashi Mizokawa
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 94 (9) 2025/09/15
ISSN: 0031-9015
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Evolution of phonon, magnetism, and electronic excitations across the insulator-to-metal transition in Ru(Br1-xIx)3
Youngsu Choi, Dirk Wulferding, Seungyeol Lee, Fuki Sato, Yoshinori Imai, Kenya Ohgushi, Beom Hyun Kim, Kwang-Yong Choi
PHYSICAL REVIEW B 112 (2) 2025/07/08
DOI: 10.1103/lrmc-1cty
ISSN: 2469-9950
eISSN: 2469-9969
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Revisiting the piezomagnetic effect in the rutile fluorides MnF2 and CoF2
Minato Komuro, Takuya Aoyama, Kenya Ohgushi
PHYSICAL REVIEW B 111 (21) 2025/06/30
DOI: 10.1103/t3xl-bxfv
ISSN: 2469-9950
eISSN: 2469-9969
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Nonferroelectric phase with loss of cycloidal magnetic structure in Tb0.515Gd0.485Mn2O5
Yuta Ishii, Terutoshi Sakakura, Yoshihisa Ishikawa, Ryoji Kiyanagi, Jana Lustikova, Takuya Aoyama, Kenya Ohgushi, Yusuke Wakabayashi, Hiroyuki Kimura, Yukio Noda
Physical Review B 110 (18) 2024/11/12
Publisher: American Physical Society (APS)DOI: 10.1103/physrevb.110.184404
ISSN: 2469-9950
eISSN: 2469-9969
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Structural and Electronic Properties of RuX3 (X = Br and I) under High Pressure
Fuki Sato, Takuya Aoyama, Saori Kawaguchi, Hirotada Gotou, Yoshinori Imai, Kenya Ohgushi
Journal of the Physical Society of Japan 2024/09/15
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Continuous structural phase transition and antiferromagnetic order in ilmenite-type NiVO3 Peer-reviewed
Hajime Yamamoto, Osamu Ikeda, Takashi Honda, Kenta Kimura, Takuya Aoyama, Kenya Ohgushi, Akio Suzuki, Kenji Ishii, Daiju Matsumura, Takuya Tsuji, Shintaro Kobayashi, Shogo Kawaguchi, Matteo d’Astuto, Tadashi Abukawa
Physical Review Materials 8 (9) 2024/09/03
Publisher: American Physical Society (APS)DOI: 10.1103/physrevmaterials.8.094402
eISSN: 2475-9953
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Observation of Thermally Induced Piezomagnetic Switching in Cu2OSeO3 Polymorph Synthesized under High‐Pressure
Hung‐Cheng Wu, Takuya Aoyama, Daisuke Morikawa, Daisuke Okuyama, Kazuhiro Nawa, Wei‐tin Chen, Chan‐Hung Lu, Tsung‐Wen Yen, Shin‐Ming Huang, Stuart Calder, Shuki Torii, Kenya Ohgushi, Masami Terauchi, Taku J. Sato
Advanced Physics Research 2024/08/05
Publisher: WileyISSN: 2751-1200
eISSN: 2751-1200
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$J$=$\frac{1}{2}$ pseudospins and $d\text{\ensuremath{- } }p$ hybridization in the Kitaev spin liquid candidates $\mathrm{Ru}{X}_{3}$ ($X$=Cl, Br, I) International-journal Peer-reviewed
H. Gretarsson, H. Fujihara, F. Sato, H. Gotou, Y. Imai, K. Ohgushi, B. Keimer, H. Suzuki
Physical Review B 109 (18) L180413-1-L180413-7 2024/05
Publisher: American Physical Society (APS)DOI: 10.1103/physrevb.109.l180413
ISSN: 2469-9950
eISSN: 2469-9969
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Piezomagnetic properties in altermagnetic MnTe
Takuya Aoyama, Kenya Ohgushi
Physical Review Materials 8 (4) L041402/1-L041402/5 2024/04/01
Publisher: American Physical Society (APS)DOI: 10.1103/physrevmaterials.8.l041402
eISSN: 2475-9953
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Observation of a giant band splitting in altermagnetic MnTe
T. Osumi, S. Souma, T. Aoyama, K. Yamauchi, A. Honma, K. Nakayama, T. Takahashi, K. Ohgushi, T. Sato
Physical Review B 109 (11) 115102/1-115102/8 2024/03/01
Publisher: American Physical Society (APS)DOI: 10.1103/physrevb.109.115102
ISSN: 2469-9950
eISSN: 2469-9969
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Thermal multiferroics in all-inorganic quasi-two-dimensional halide perovskites Peer-reviewed
Tong Zhu, Xue-Zeng Lu, Takuya Aoyama, Koji Fujita, Yusuke Nambu, Takashi Saito, Hiroshi Takatsu, Tatsushi Kawasaki, Takumi Terauchi, Shunsuke Kurosawa, Akihiro Yamaji, Hao-Bo Li, Cédric Tassel, Kenya Ohgushi, James M. Rondinelli, Hiroshi Kageyama
Nature Materials 23 182-188 2024/02
DOI: 10.1038/s41563-023-01759-y
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Insulator-metal transition in Ru(Br1-x Ix)3 with honeycomb structure
Fuki Sato, Hideyuki Fujihara, Hirotada Gotou, Takuya Aoyama, Yoshinori Imai, Kenya Ohgushi
Physical Review B 109 (3) 035154/1-035154/5 2024/01/15
DOI: 10.1103/PhysRevB.109.035154
ISSN: 2469-9950
eISSN: 2469-9969
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Magnetism in the Kitaev quantum spin liquid candidate RuBr3
T. Weinhold, C. Wang, F. Seewald, V. Grinenko, Y. Imai, F. Sato, K. Ohgushi, H. H. Klauss, R. Sarkar
Physical Review B 109 (1) 014440/1-014440/5 2024/01/01
DOI: 10.1103/PhysRevB.109.014440
ISSN: 2469-9950
eISSN: 2469-9969
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Pressure-induced switching of electronic nematicity in the iron-based ladder materials Formula Presented Formula Presented
Takuya Aoyama, Rinto Nojima, Touru Yamauchi, Yoshinori Imai, Kenya Ohgushi
Physical Review B 108 (9) 094507/1-094507/6 2023/09/01
DOI: 10.1103/PhysRevB.108.094507
ISSN: 2469-9950
eISSN: 2469-9969
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Magnetic and spin-orbit exciton excitations in the honeycomb lattice compound RuBr3 Peer-reviewed
Youngsu Choi, Je Ho Lee, Seungyeol Lee, Dirk Wulferding, Hideyuki Fujihara, Fuki Sato, Yoshinori Imai, Kenya Ohgushi, Maeng Je Seong, Kwang Yong Choi
Physical Review B 106 (17) 2022/11/01
DOI: 10.1103/PhysRevB.106.174430
ISSN: 2469-9950
eISSN: 2469-9969
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Light-induced magnetization driven by interorbital charge motion in the spin-orbit assisted Mott insulator 𝛼−RuCl3
T. Amano, Y. Kawakami, H. Itoh, K. Konno, Y. Hasegawa, T. Aoyama, Y. Imai, K. Ohgushi, Y. Takeuchi, Y. Wakabayashi, K. Goto, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai
Physical Review Research 4 (3) 2022/08/19
Publisher: American Physical Society (APS)DOI: 10.1103/physrevresearch.4.l032032
eISSN: 2643-1564
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Enhanced anisotropic magnetoresistance in the odd-parity multipole-ordered conductor Ba1−xKxMn2As2
Takuya Aoyama, Masahiro Kudo, Kaoru Igarashi, Kazutoshi Emi, Shojiro Kimura, Yoshinori Imai, Kenya Ohgushi
Physical Review B 2022/06/28
DOI: 10.1103/PhysRevB.105.224422
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Persistent Spin–Orbit Mott Insulating State in Highly Compressed Post-Perovskite CaIrO3
Takuya Aoyama, Kenji Ohta, Katsuya Shimizu, Kenya Ohgushi
Journal of the Physical Society of Japan 91 (4) 2022/04/15
Publisher: Physical Society of JapanISSN: 0031-9015
eISSN: 1347-4073
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Pressure-Induced Superconductivity in Iron-Based Spin-Ladder Compound BaFe2+delta(S1-xSex)(3)
Hiroki Takahashi, Ryosuke Kikuchi, Chizuru Kawashima, Satoshi Imaizumi, Takuya Aoyama, Kenya Ohgushi
MATERIALS 15 (4) 2022/02
DOI: 10.3390/ma15041401
eISSN: 1996-1944
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Ultrafast magnetization driven by spiral current in Kitaev spin liquid α-RuCl3
T. Amano, Y. Kawakami, H. Itoh, T. Aoyama, Y. Imai, K. Ohgushi, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai
The International Conference on Ultrafast Phenomena (UP) 2022 2022
Publisher: Optica Publishing Group -
Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice
Yoshinori Imai, Kazuhiro Nawa, Yasuhiro Shimizu, Wakana Yamada, Hideyuki Fujihara, Takuya Aoyama, Ryotaro Takahashi, Daisuke Okuyama, Takamasa Ohashi, Masato Hagihala, Shuki Torii, Daisuke Morikawa, Masami Terauchi, Takayuki Kawamata, Masatsune Kato, Hirotada Gotou, Masayuki Itoh, Taku J. Sato, Kenya Ohgushi
PHYSICAL REVIEW B 105 (4) 2022/01
DOI: 10.1103/PhysRevB.105.L041112
ISSN: 2469-9950
eISSN: 2469-9969
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Strongly Electron-Correlated Semimetal RuI3 with a Layered Honeycomb Structure
Kazuhiro Nawa, Yoshinori Imai, Youhei Yamaji, Hideyuki Fujihara, Wakana Yamada, Ryotaro Takahashi, Takumi Hiraoka, Masato Hagihala, Shuki Torii, Takuya Aoyama, Takamasa Ohashi, Yasuhiro Shimizu, Hirotada Gotou, Masayuki Itoh, Kenya Ohgushi, Taku J. Sato
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 90 (12) 2021/12
ISSN: 0031-9015
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Dichotomy between orbital and magnetic nematic instabilities in BaFe2S3
S. Hosoi, T. Aoyama, K. Ishida, Y. Mizukami, K. Hashizume, S. Imaizumi, Y. Imai, K. Ohgushi, Y. Nambu, M. Kimata, S. Kimura, T. Shibauchi
PHYSICAL REVIEW RESEARCH 2 (4) 2020/11
DOI: 10.1103/PhysRevResearch.2.043293
eISSN: 2643-1564
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A j(eff)=1/2 pseudospinon continuum in CaIrO3
Matteo Rossi, Pietro Marabotti, Yasuyuki Hirata, Giulio Monaco, Michael Krisch, Kenya Ohgushi, Krzysztof Wohlfeld, Jeroen van den Brink, Marco Moretti Sala
EUROPEAN PHYSICAL JOURNAL PLUS 135 (8) 2020/08
DOI: 10.1140/epjp/s13360-020-00649-5
ISSN: 2190-5444
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Mossbauer Study of Rare-earth Ferroborate NdFe3(BO3)(4) Peer-reviewed
Shin Nakamura, Takatsugu Masuda, Kenya Ohgushi, Takuro Katsufuji
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 89 (8) 084703-084703 2020/08
ISSN: 0031-9015
eISSN: 1347-4073
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Successive magnetic transitions and spin structure in the two-leg ladder compound CsFe2Se3 observed by Cs-133 and Se-77 NMR Peer-reviewed
Mina Murase, Kaoru Okada, Yoshiaki Kobayashi, Yasuyuki Hirata, Kazuki Hashizume, Takuya Aoyama, Kenya Ohgushi, Masayuki Itoh
PHYSICAL REVIEW B 102 (1) 2020/07
DOI: 10.1103/PhysRevB.102.014433
ISSN: 2469-9950
eISSN: 2469-9969
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Structural, electrical, magnetic, and optical properties of iron-based ladder compounds BaFe2(S1-xSex)(3) Peer-reviewed
Satoshi Imaizumi, Takuya Aoyama, Ryota Kimura, Koya Sasaki, Yusuke Nambu, Maxim Avdeev, Yasuyuki Hirata, Yuka Ikemoto, Taro Moriwaki, Yoshinori Imai, Kenya Ohgushi
PHYSICAL REVIEW B 102 (3) 2020/07
DOI: 10.1103/PhysRevB.102.035104
ISSN: 2469-9950
eISSN: 2469-9969
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High-pressure synthesis of heavily hole-doped cuprates Mg1-xLixCu2O3 with quasi-one-dimensional structure Peer-reviewed
Yoshinori Imai, Koya Sasaki, Takuya Aoyama, Kenji Shirasaki, Tomoo Yamamura, Kenya Ohgushi
PHYSICAL REVIEW B 101 (24) 2020/06
DOI: 10.1103/PhysRevB.101.245112
ISSN: 2469-9950
eISSN: 2469-9969
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A Semimetallic State in La3Ir3O11 with the KSbO3 Structure Peer-reviewed
Takuya Aoyama, Kazutoshi Emi, Chihiro Tabata, Yusuke Nambu, Hironori Nakao, Touru Yamauchi, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 88 (9) 2019/09
ISSN: 0031-9015
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Large Magnon Contributions to Thermal Conductance in Quasi-One-Dimensional Fe-Based Ladder Compounds BaFe2(S1-xSex)(3) Peer-reviewed
Fei Du, Yutaka Ueda, Kenya Ohgushi
PHYSICAL REVIEW LETTERS 123 (8) 2019/08
DOI: 10.1103/PhysRevLett.123.086601
ISSN: 0031-9007
eISSN: 1079-7114
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Hydrated lithium intercalation into the Kitaev spin liquid candidate material alpha-RuCl3 Peer-reviewed
Imai Yoshinori, Konno Katsuya, Hasegawa Yoshinao, Aoyama Takuya, Ohgushi Kenya
PHYSICAL REVIEW B 99 (24) 2019/06/21
DOI: 10.1103/PhysRevB.99.245141
ISSN: 2469-9950
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Polar state induced by block-type lattice distortions in BaFe2Se3 with quasi-one-dimensional ladder structure Peer-reviewed
Aoyama Takuya, Imaizumi Satoshi, Togashi Takuya, Sato Yoshifumi, Hashizume Kazuki, Nambu Yusuke, Hirata Yasuyuki, Matsubara Masakazu, Ohgushi Kenya
PHYSICAL REVIEW B 99 (24) 2019/06/19
DOI: 10.1103/PhysRevB.99.241109
ISSN: 2469-9950
eISSN: 2469-9969
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Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1-x P x )2 superconductors Peer-reviewed
T. Sonobe, T. Shimojima, A. Nakamura, M. Nakajima, S. Uchida, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, K. Ohgushi, K. Ishizaka
Scientific Reports 8 (1) 2018/12/01
DOI: 10.1038/s41598-018-20332-1
ISSN: 2045-2322
eISSN: 2045-2322
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Quantum Paramagnet Near Spin‐State Transition Peer-reviewed
K. Tomiyasu, N. Ito, R. Okazaki, Y. Takahashi, M. Onodera, K. Iwasa, T. Nojima, T. Aoyama, K. Ohgushi, Y. Ishikawa, T. Kamiyama, S. Ishihara
Adv. Quantum. Technol. 1 1800057 2018/10
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Crystal structure determination under high pressure in the iron-based ladder superconductor BaFe2S3 Peer-reviewed
Kobayashi Kensuke, Maki Sachiko, Murakami Youichi, Hirata Yasuyuki, Ohgushi Kenya, Yamaura Jun-ichi
SUPERCONDUCTOR SCIENCE & TECHNOLOGY 31 (10) 2018/10
ISSN: 0953-2048
eISSN: 1361-6668
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Strong magneto-optical effects in ACr2 O4 (A=Fe, Co) spinel oxides generated by tetrahedrally coordinated transition metal ions Peer-reviewed
V. Kocsis, S. Bordács, J. Deisenhofer, L. F. Kiss, K. Ohgushi, Y. Kaneko, Y. Tokura, I. Kézsmárki
Physical Review B 97 (12) 2018/03/23
DOI: 10.1103/PhysRevB.97.125140
ISSN: 2469-9969 2469-9950
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Two-phonon Absorption Spectra in the Layered Honeycomb Compound alpha-RuCl3 Peer-reviewed
Yoshinao Hasegawa, Takuya Aoyama, Koya Sasaki, Yuka Ikemoto, Taro Moriwaki, Toshiya Shirakura, Riichiro Saito, Yoshinori Imai, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 86 (12) 2017/12
ISSN: 0031-9015
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Ultrahigh magnetic field phases in the frustrated triangular-lattice magnet CuCrO2 Peer-reviewed
Atsuhiko Miyata, Oliver Portugall, Daisuke Nakamura, Kenya Ohgushi, Shojiro Takeyama
PHYSICAL REVIEW B 96 (18) 2017/11
DOI: 10.1103/PhysRevB.96.180401
ISSN: 2469-9950
eISSN: 2469-9969
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Orbital order and fluctuations in the two-leg ladder materials BaFe2X3 (X = S and Se) and CsFe2Se3 Peer-reviewed
Kou Takubo, Yuichi Yokoyama, Hiroki Wadati, Shun Iwasaki, Takashi Mizokawa, Teak Boyko, Ronny Sutarto, Feizhou He, Kazuki Hashizume, Satoshi Imaizumi, Takuya Aoyama, Yoshinori Imai, Kenya Ohgushi
PHYSICAL REVIEW B 96 (11) 2017/09
DOI: 10.1103/PhysRevB.96.115157
ISSN: 2469-9950
eISSN: 2469-9969
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Antiferroic electronic structure in the nonmagnetic superconducting state of the iron-based superconductors Peer-reviewed
Takahiro Shimojima, Walid Malaeb, Asuka Nakamura, Takeshi Kondo, Kunihiro Kihou, Chul-Ho Lee, Akira Iyo, Hiroshi Eisaki, Shigeyuki Ishida, Masamichi Nakajima, Shin-ichi Uchida, Kenya Ohgushi, Kyoko Ishizaka, Shik Shin
SCIENCE ADVANCES 3 (8) 2017/08
ISSN: 2375-2548
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Anisotropic magnetodielectric effect in the honeycomb-type magnet alpha-RuCl3 Peer-reviewed
Takuya Aoyama, Yoshinao Hasegawa, Shojiro Kimura, Tsuyoshi Kimura, Kenya Ohgushi
PHYSICAL REVIEW B 95 (24) 245104 2017/06
DOI: 10.1103/PhysRevB.95.245104
ISSN: 2469-9950
eISSN: 2469-9969
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Pressure-Induced Metallization in Iron-Based Ladder Compounds Ba1-xCsxFe2Se3 Peer-reviewed
Takafumi Hawai, Chizuru Kawashima, Kenya Ohgushi, Kazuyuki Matsubayashi, Yusuke Nambu, Yoshiya Uwatoko, Taku J. Sato, Hiroki Takahashi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 86 (2) 024701 2017/02
ISSN: 0031-9015
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High-pressure electrical resistivity studies for Ba1-xCsxFe2Se3 Peer-reviewed
C. Kawashima, H. Soeda, H. Takahashi, T. Hawai, Y. Nambu, T. J. Sato, Y. Hirata, K. Ohgushi
JOINT AIRAPT-25TH & EHPRG-53RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, 2015 950 042031 2017
DOI: 10.1088/1742-6596/950/4/042034
ISSN: 1742-6588
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Magnetic resonances of multiferroic TbFe3(BO3)(4) Peer-reviewed
David Szaller, Vilmos Kocsis, Sandor Bordacs, Titusz Feher, Toomas Room, Urmas Nagel, Hans Engelkamp, Kenya Ohgushi, Istvan Kezsmarki
PHYSICAL REVIEW B 95 (2) 2017/01
DOI: 10.1103/PhysRevB.95.024427
ISSN: 2469-9950
eISSN: 2469-9969
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A compact and versatile dynamic flow cryostat for photon science Peer-reviewed
Peter J. E. M. van der Linden, Marco Moretti Sala, Christian Henriquet, Matteo Rossi, Kenya Ohgushi, Franois Fauth, Laura Simonelli, Carlo Marini, Edmundo Fraga, Claire Murray, Jonathan Potter, Michael Krisch
REVIEW OF SCIENTIFIC INSTRUMENTS 87 (11) 115103 2016/11
DOI: 10.1063/1.4966270
ISSN: 0034-6748
eISSN: 1089-7623
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Post-perovskite Transition in Anti-structure Peer-reviewed
Bosen Wang, Kenya Ohgushi
SCIENTIFIC REPORTS 6 37896 2016/11
DOI: 10.1038/srep37896
ISSN: 2045-2322
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Magnetic Precursor of the Pressure-Induced Superconductivity in Fe-Ladder Compounds Peer-reviewed
Songxue Chi, Yoshiya Uwatoko, Huibo Cao, Yasuyuki Hirata, Kazuki Hashizume, Takuya Aoyama, Kenya Ohgushi
PHYSICAL REVIEW LETTERS 117 (4) 047003 2016/07
DOI: 10.1103/PhysRevLett.117.047003
ISSN: 0031-9007
eISSN: 1079-7114
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Erratum: Pressure-induced mott transition followed by a 24-K superconducting phase in BaFe2S3 (Physical Review Letters (2015) 115 (246402) DOI 10.1103/PhysRevLett.115.246402) Peer-reviewed
Touru Yamauchi, Yasuyuki Hirata, Yutaka Ueda, Kenya Ohgushi
Physical Review Letters 116 2016/04/15
DOI: 10.1103/PhysRevLett.116.159901
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Crystal field excitations on NdFe3(BO3)(4) investigated by inelastic neutron scattering Peer-reviewed
S. Hayashida, M. Soda, S. Itoh, T. Yokoo, K. Ohgushi, D. Kawana, T. Masuda
VI EUROPEAN CONFERENCE ON NEUTRON SCATTERING (ECNS2015) 746 012059 2016
DOI: 10.1088/1742-6596/746/1/012059
ISSN: 1742-6588
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Pressure-Induced Mott Transition Followed by a 24-K Superconducting Phase in BaFe2S3 Peer-reviewed
Touru Yamauchi, Yasuyuki Hirata, Yutaka Ueda, Kenya Ohgushi
PHYSICAL REVIEW LETTERS 115 (24) 2015/12
DOI: 10.1103/PhysRevLett.115.246402
ISSN: 0031-9007
eISSN: 1079-7114
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Effects of stoichiometry and substitution in quasi-one-dimensional iron chalcogenide BaFe2S3 Peer-reviewed
Yasuyuki Hirata, Sachiko Maki, Jun-ichi Yamaura, Touru Yamauchi, Kenya Ohgushi
PHYSICAL REVIEW B 92 (20) 205109 2015/11
DOI: 10.1103/PhysRevB.92.205109
ISSN: 1098-0121
eISSN: 1550-235X
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Pressure-induced superconductivity in the iron-based ladder material BaFe2S3 Peer-reviewed
Hiroki Takahashi, Akira Sugimoto, Yusuke Nambu, Touru Yamauchi, Yasuyuki Hirata, Takateru Kawakami, Maxim Avdeev, Kazuyuki Matsubayashi, Fei Du, Chizuru Kawashima, Hideto Soeda, Satoshi Nakano, Yoshiya Uwatoko, Yutaka Ueda, Taku J. Sato, Kenya Ohgushi
NATURE MATERIALS 14 (10) 1008-+ 2015/10
DOI: 10.1038/NMAT4351
ISSN: 1476-1122
eISSN: 1476-4660
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High Pressure Effect on the Superconductivity in VN Peer-reviewed
Bosen Wang, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 84 (10) 104706 2015/10
ISSN: 0031-9015
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Magnetic model in multiferroic NdFe3(BO3)(4) investigated by inelastic neutron scattering Peer-reviewed
S. Hayashida, M. Soda, S. Itoh, T. Yokoo, K. Ohgushi, D. Kawana, H. M. Ronnow, T. Masuda
PHYSICAL REVIEW B 92 (5) 054402 2015/08
DOI: 10.1103/PhysRevB.92.054402
ISSN: 1098-0121
eISSN: 1550-235X
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Temperature and composition phase diagram in the iron-based ladder compounds Ba1-xCsxFe2Se3 Peer-reviewed
Takafumi Hawai, Yusuke Nambu, Kenya Ohgushi, Fei Du, Yasuyuki Hirata, Maxim Avdeev, Yoshiya Uwatoko, Yurina Sekine, Hiroshi Fukazawa, Jie Ma, Songxue Chi, Yutaka Ueda, Hideki Yoshizawa, Taku J. Sato
PHYSICAL REVIEW B 91 (18) 184416-1-184416-11 2015/05
DOI: 10.1103/PhysRevB.91.184416
ISSN: 1098-0121
eISSN: 1550-235X
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Optimum-Doped Superconductivity Associated with Phonon Softening in Vanadium-Based Compounds with Anti-Post-Perovskite Structure Peer-reviewed
Bosen Wang, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 84 (4) 044707-1-044707-5 2015/04
ISSN: 0031-9015
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Coexistence of localized and itinerant electrons in BaFe2X3 (X = S and Se) revealed by photoemission spectroscopy Peer-reviewed
D. Ootsuki, N. L. Saini, F. Du, Y. Hirata, K. Ohgushi, Y. Ueda, T. Mizokawa
PHYSICAL REVIEW B 91 (1) 014505-1-014505-4 2015/01
DOI: 10.1103/PhysRevB.91.014505
ISSN: 1098-0121
eISSN: 1550-235X
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Inelastic neutron scattering on multiferroics NdFe3(BO3)(4) Peer-reviewed
Shohei Hayashida, Minoru Soda, Shinichi Itoh, Tetsuya Yokoo, Kenya Ohgushi, Daichi Kawana, Takatsugu Masuda
20TH INTERNATIONAL CONFERENCE ON MAGNETISM, ICM 2015 75 127-133 2015
DOI: 10.1016/j.phpro.2015.12.018
ISSN: 1875-3892
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Evidence of a universal relation between electron-mode coupling and T-c in Ba1-xKxFe2As2 superconductor from laser angle-resolved photoemission spectroscopy Peer-reviewed
W. Malaeb, T. Shimojima, Y. Ishida, T. Kondo, K. Okazaki, Y. Ota, K. Ohgushi, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, S. Ishida, M. Nakajima, S. Uchida, H. Fukazawa, T. Saito, Y. Kohori, S. Shin
PHYSICAL REVIEW B 90 (19) 195124-1-195124-6 2014/11
DOI: 10.1103/PhysRevB.90.195124
ISSN: 1098-0121
eISSN: 1550-235X
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Doping- and pressure-induced change of electrical and magnetic properties in the Fe-based spin-ladder compound BaFe2Se3 Peer-reviewed
Fei Du, Yasuyuki Hirata, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Yutaka Ueda, Kenya Ohgushi
PHYSICAL REVIEW B 90 (8) 085143-1-085143-6 2014/08
DOI: 10.1103/PhysRevB.90.085143
ISSN: 1098-0121
eISSN: 1550-235X
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Magnetoelectric responses from the respective magnetic R and Fe subsystems in the noncentrosymmetric antiferromagnets RFe3(BO3)(4) (R = Eu, Gd, and Tb) Peer-reviewed
T. Kurumaji, K. Ohgushi, Y. Tokura
PHYSICAL REVIEW B 89 (19) 195126-1-195126-13 2014/05
DOI: 10.1103/PhysRevB.89.195126
ISSN: 1098-0121
eISSN: 1550-235X
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High-pressure effects in anti-post-perovskite superconductors V(3)PnN(x) (Pn = P, As) Peer-reviewed
B. S. Wang, J. -G. Cheng, K. Matsubayashi, Y. Uwatoko, K. Ohgushi
PHYSICAL REVIEW B 89 (14) 144510-1-144510-4 2014/04
DOI: 10.1103/PhysRevB.89.144510
ISSN: 1098-0121
eISSN: 1550-235X
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CaIrO3: A Spin-Orbit Mott Insulator Beyond the j(eff)=1/2 Ground State Peer-reviewed
M. Moretti Sala, K. Ohgushi, A. Al-Zein, Y. Hirata, G. Monaco, M. Krisch
PHYSICAL REVIEW LETTERS 112 (17) 176402-1-176402-5 2014/04
DOI: 10.1103/PhysRevLett.112.176402
ISSN: 0031-9007
eISSN: 1079-7114
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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 - Condensed Matter and Materials Physics 89 (4) 2014/01/03
DOI: 10.1103/PhysRevB.89.045101
ISSN: 1098-0121
eISSN: 1550-235X
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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
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Control of Bond-Strain-Induced Electronic Phase Transitions in Iron Perovskites Peer-reviewed
Ikuya Yamada, Hidenobu Etani, Kazuki Tsuchida, Shohei Marukawa, Naoaki Hayashi, Takateru Kawakami, Masaichiro Mizumaki, Kenya Ohgushi, Yoshihiro Kusano, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Mikio Takano
INORGANIC CHEMISTRY 52 (23) 13751-13761 2013/12
DOI: 10.1021/ic402344m
ISSN: 0020-1669
eISSN: 1520-510X
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Superconductivity in anti-post-perovskite vanadium compounds Peer-reviewed
Bosen Wang, Kenya Ohgushi
Scientific Reports 3 3381-1-3381-5 2013/11/29
DOI: 10.1038/srep03381
ISSN: 2045-2322
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Hydrostatic pressure (8 GPa) dependence of electrical resistivity of BaCo2As2 single crystal Peer-reviewed
Chandreyee Ganguli, Kazuyuki Matsubayashi, Kenya Ohgushi, Yoshiya Uwatoko, Moorthi Kanagaraj, Sonachalam Arumugam
MATERIALS RESEARCH BULLETIN 48 (10) 4329-4331 2013/10
DOI: 10.1016/j.materresbull.2013.07.003
ISSN: 0025-5408
eISSN: 1873-4227
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NMR study of successive magnetic transitions in the A-site ordered perovskite LaMn3Cr4O12 Peer-reviewed
Yu Kawasaki, Syota Takase, Yutaka Kishimoto, Takashi Ohno, Ikuya Yamada, Kentaro Shiro, Ryoji Takahashi, Kenya Ohgushi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune
JOURNAL OF THE KOREAN PHYSICAL SOCIETY 63 (3) 640-643 2013/08
DOI: 10.3938/jkps.63.640
ISSN: 0374-4884
eISSN: 1976-8524
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Resonant X-ray diffraction study of the strongly spin-orbit-coupled mott insulator CaIrO3 Peer-reviewed
Kenya Ohgushi, Jun-Ichi Yamaura, Hiroyuki Ohsumi, Kunihisa Sugimoto, Soshi Takeshita, Akihisa Tokuda, Hidenori Takagi, Masaki Takata, Taka-Hisa Arima
Physical Review Letters 110 (21) 217212-1-217212-5 2013/05/24
DOI: 10.1103/PhysRevLett.110.217212
ISSN: 0031-9007 1079-7114
eISSN: 1079-7114
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Mechanism of enhanced optical second-harmonic generation in the conducting pyrochlore-type Pb2Ir2O7-x oxide compound Peer-reviewed
Yasuyuki Hirata, Makoto Nakajima, Yusuke Nomura, Hiroyuki Tajima, Yoshitaka Matsushita, Keiko Asoh, Yoko Kiuchi, Adolfo G. Eguiluz, Ryotaro Arita, Tohru Suemoto, Kenya Ohgushi
Physical Review Letters 110 (18) 187402-1-187402-5 2013/05/03
DOI: 10.1103/PhysRevLett.110.187402
ISSN: 0031-9007 1079-7114
eISSN: 1079-7114
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Suppression of intersite charge transfer in charge-disproportionated perovskite YCu3Fe4O12 Peer-reviewed
Hidenobu Etani, Ikuya Yamada, Kenya Ohgushi, Naoaki Hayashi, Yoshihiro Kusano, Masaichiro Mizumaki, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Mikio Takano
Journal of the American Chemical Society 135 (16) 6100-6106 2013/04/24
DOI: 10.1021/ja312015j
ISSN: 0002-7863 1520-5126
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Complex orbital state stabilized by strong spin-orbit coupling in a metallic iridium oxide IrO2 Peer-reviewed
Yasuyuki Hirata, Kenya Ohgushi, Jun-Ichi Yamaura, Hiroyuki Ohsumi, Soshi Takeshita, Masaki Takata, Taka-Hisa Arima
Physical Review B - Condensed Matter and Materials Physics 87 (16) 161111-1-161111-5 2013/04/15
DOI: 10.1103/PhysRevB.87.161111
ISSN: 1098-0121 1550-235X
eISSN: 1550-235X
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B-site deficiencies in A-site-ordered perovskite LaCu3Pt 3.75O12 Peer-reviewed
Mikiko Ochi, Ikuya Yamada, Kenya Ohgushi, Yoshihiro Kusano, Masaichiro Mizumaki, Ryoji Takahashi, Shunsuke Yagi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune
Inorganic Chemistry 52 (7) 3985-3989 2013/04/01
DOI: 10.1021/ic302809v
ISSN: 0020-1669
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Observation of Phonon-Assisted Magnon Absorption in Spin-Orbit Coupling Induced Mott Insulator Sr2IrO4 Peer-reviewed
Yasuyuki Hirata, Hiroyuki Tajima, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 82 (3) 035002-1-035002-2 2013/03
ISSN: 0031-9015
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Pd2+-incorporated perovskite CaPd3 B 4O12 (B = Ti, V) Peer-reviewed
Kentaro Shiro, Ikuya Yamada, Naoya Ikeda, Kenya Ohgushi, Masaichiro Mizumaki, Ryoji Takahashi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune
Inorganic Chemistry 52 (3) 1604-1609 2013/02/04
DOI: 10.1021/ic3025155
ISSN: 0020-1669
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Magnetoelasticity in ACr(2)O(4) spinel oxides (A = Mn, Fe, Co, Ni, and Cu) Peer-reviewed
V. Kocsis, S. Bordacs, D. Varjas, K. Penc, A. Abouelsayed, C. A. Kuntscher, K. Ohgushi, Y. Tokura, I. Kezsmarki
PHYSICAL REVIEW B 87 (6) 064416-1-064416-9 2013/02
DOI: 10.1103/PhysRevB.87.064416
ISSN: 1098-0121
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Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping Peer-reviewed
W. Malaeb, T. Shimojima, Y. Ishida, K. Okazaki, Y. Ota, K. Ohgushi, K. Kihou, T. Saito, C. H. Lee, S. Ishida, M. Nakajima, S. Uchida, H. Fukazawa, Y. Kohori, A. Iyo, H. Eisaki, C. -T. Chen, S. Watanabe, H. Ikeda, S. Shin
PHYSICAL REVIEW B 86 (16) 165117-1-165117-7 2012/10
DOI: 10.1103/PhysRevB.86.165117
ISSN: 1098-0121
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Tetrahedral Magnetic Order and the Metal-Insulator Transition in the Pyrochlore Lattice of Cd2Os2O7 Peer-reviewed
J. Yamaura, K. Ohgushi, H. Ohsumi, T. Hasegawa, I. Yamauchi, K. Sugimoto, S. Takeshita, A. Tokuda, M. Takata, M. Udagawa, M. Takigawa, H. Harima, T. Arima, Z. Hiroi
PHYSICAL REVIEW LETTERS 108 (24) 247205-1-247205-5 2012/06
DOI: 10.1103/PhysRevLett.108.247205
ISSN: 0031-9007
eISSN: 1079-7114
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Stripelike magnetism in a mixed-valence insulating state of the Fe-based ladder compound CsFe2Se3 Peer-reviewed
Fei Du, Kenya Ohgushi, Yusuke Nambu, Takateru Kawakami, Maxim Avdeev, Yasuyuki Hirata, Yoshitaka Watanabe, Taku J. Sato, Yutaka Ueda
PHYSICAL REVIEW B 85 (21) 214436-1-214436-5 2012/06
DOI: 10.1103/PhysRevB.85.214436
ISSN: 1098-0121
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In situ observation of shear stress-induced perovskite to post-perovskite phase transition in CaIrO3 and the development of its deformation texture in a diamond-anvil cell up to 30 GPa Peer-reviewed
Ken Niwa, Nobuyoshi Miyajima, Yusuke Seto, Kenya Ohgushi, Hirotada Gotou, Takehiko Yagi
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 194 10-17 2012/03
DOI: 10.1016/j.pepi.2012.01.007
ISSN: 0031-9201
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Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe <inf>2</inf>Se <inf>3</inf> Peer-reviewed
Yusuke Nambu, Kenya Ohgushi, Shunpei Suzuki, Fei Du, Maxim Avdeev, Yoshiya Uwatoko, Koji Munakata, Hiroshi Fukazawa, Songxue Chi, Yutaka Ueda, Taku J. Sato
Physical Review B - Condensed Matter and Materials Physics 85 (6) 064413-1-064413-5 2012/02/22
DOI: 10.1103/PhysRevB.85.064413
ISSN: 1098-0121
eISSN: 1550-235X
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Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe2Se3
Yusuke Nambu, Kenya Ohgushi, Shunpei Suzuki, Fei Du, Maxim Avdeev, Yoshiya Uwatoko, Koji Munakata, Hiroshi Fukazawa, Songxue Chi, Yutaka Ueda, Taku J. Sato
PHYSICAL REVIEW B 85 (6) 2012/02
DOI: 10.1103/PhysRevB.85.064413
ISSN: 2469-9950
eISSN: 2469-9969
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Doping dependence of Hall coefficient and evolution of coherent electronic state in the normal state of the Fe-based superconductor Ba1-xKxFe2As2 Peer-reviewed
Kenya Ohgushi, Yoko Kiuchi
PHYSICAL REVIEW B 85 (6) 064522-1-064522-5 2012/02
DOI: 10.1103/PhysRevB.85.064522
ISSN: 1098-0121
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Phase transition and magnetic structure of pyrochlore oxide Cd2Os2O7 Peer-reviewed
J. Yamaura, H. Ohsumi, K. Sugimoto, S. Tsutsui, Y. Yoda, S. Takeshita, A. Tokuda, S. Kitao, M. Kurokuzu, M. Seto, I. Yamauchi, K. Ohgushi, M. Takigawa, T. Arima, Z. Hiroi
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011) 391 012112-1-012112-4 2012
DOI: 10.1088/1742-6596/391/1/012112
ISSN: 1742-6588
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Pressure-induced changes in the magnetic and valence state of EuFe2As2 Peer-reviewed
K. Matsubayashi, K. Munakata, M. Isobe, N. Katayama, K. Ohgushi, Y. Ueda, N. Kawamura, M. Mizumaki, N. Ishimatsu, M. Hedo, I. Umehara, Y. Uwatoko
PHYSICAL REVIEW B 84 (2) 024502-1-024502-6 2011/07
DOI: 10.1103/PhysRevB.84.024502
ISSN: 1098-0121
eISSN: 1550-235X
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Orbital-Independent Superconducting Gaps in Iron Pnictides Peer-reviewed
T. Shimojima, F. Sakaguchi, K. Ishizaka, Y. Ishida, T. Kiss, M. Okawa, T. Togashi, C. -T. Chen, S. Watanabe, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Ohgushi, S. Kasahara, T. Terashima, T. Shibauchi, Y. Matsuda, A. Chainani, S. Shin
SCIENCE 332 (6029) 564-567 2011/04
ISSN: 0036-8075
eISSN: 1095-9203
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Structural and electronic properties of pyrochlore-type A(2)Re(2)O(7) (A = Ca, Cd, and Pb) Peer-reviewed
Kenya Ohgushi, Jun-ichi Yamaura, Masaki Ichihara, Yoko Kiuchi, Takashi Tayama, Toshiro Sakakibara, Hirotada Gotou, Takehiko Yagi, Yutaka Ueda
PHYSICAL REVIEW B 83 (12) 125103-1-125103-6 2011/03
DOI: 10.1103/PhysRevB.83.125103
ISSN: 1098-0121
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Giant Negative Thermal Expansion in a Novel Iron Perovskite SrCu3Fe4O12 Peer-reviewed
Yamada, I, K. Tsuchida, K. Ohgushi, N. Hayashi, J. Kim, N. Tsuji, R. Takahashi, M. Matsushita, N. Nishiyama, T. Inoue, T. Irifune, K. Kato, M. Takata, M. Takano
Angew. Chem. Int. Ed. 123 6709-6712 2011
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Elasticity of CaIrO3 with perovskite and post-perovskite structure Peer-reviewed
Ken Niwa, Takehiko Yagi, Kenya Ohgushi
PHYSICS AND CHEMISTRY OF MINERALS 38 (1) 21-31 2011/01
DOI: 10.1007/s00269-010-0378-z
ISSN: 0342-1791
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Superconducting Phase at 7.7 K in the HgxReO3 Compound with a Hexagonal Bronze Structure Peer-reviewed
Kenya Ohgushi, Ayako Yamamoto, Yoko Kiuchi, Chandreyee Ganguli, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Hidenori Takagi
PHYSICAL REVIEW LETTERS 106 (1) 017001-1-017001-4 2011/01
DOI: 10.1103/PhysRevLett.106.017001
ISSN: 0031-9007
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Giant Negative Thermal Expansion in the Iron Perovskite SrCu3Fe4O12 Peer-reviewed
Ikuya Yamada, Kazuki Tsuchida, Kenya Ohgushi, Naoaki Hayashi, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Masafumi Matsushita, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Kenichi Kato, Masaki Takata, Mikio Takano
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 50 (29) 6579-6582 2011
ISSN: 1433-7851
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Transition from antiferromagnetism to superconductivity in the compensated metallic state of Ba1-xKx(Fe1-yCoy)(2)As-2 Peer-reviewed
Shunpei Suzuki, Kenya Ohgushi, Yoko Kiuchi, Yutaka Ueda
PHYSICAL REVIEW B 82 (18) 184510-1-184510-5 2010/11
DOI: 10.1103/PhysRevB.82.184510
ISSN: 1098-0121
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CaCu3Pt4O12: The First Perovskite with the B Site Fully Occupied by Pt4+ Peer-reviewed
Ikuya Yamada, Yuka Takahashi, Kenya Ohgushi, Norimasa Nishiyama, Ryoji Takahashi, Kohei Wada, Takehiro Kunimoto, Hiroaki Ohfuji, Yohei Kojima, Toru Inoue, Tetsuo Irifune
INORGANIC CHEMISTRY 49 (15) 6778-6780 2010/08
DOI: 10.1021/ic100474x
ISSN: 0020-1669
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High-Field Studies on Single Crystals of EuFe2As2 Peer-reviewed
M. Tokunaga, I. Katakura, N. Katayama, K. Ohgushi
JOURNAL OF LOW TEMPERATURE PHYSICS 159 (5-6) 601-605 2010/06
DOI: 10.1007/s10909-010-0169-4
ISSN: 0022-2291
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Experimental band structure of the nearly half-metallic CuCr2Se4: an optical and magneto-optical study Peer-reviewed
S. Bordacs, I. Kezsmarki, K. Ohgushi, Y. Tokura
NEW JOURNAL OF PHYSICS 12 053039-1-053039-10 2010/05
DOI: 10.1088/1367-2630/12/5/053039
ISSN: 1367-2630
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Magnetic phase diagrams of the multicritical olivine Mn2SiS4 and Mn2GeS4 Peer-reviewed
J. -H. Chung, K. Ohgushi, Y. Ueda
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 322 (7) 832-837 2010/04
DOI: 10.1016/j.jmmm.2009.11.013
ISSN: 0304-8853
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Orbital-Dependent Modifications of Electronic Structure across the Magnetostructural Transition in BaFe2As2 Peer-reviewed
T. Shimojima, K. Ishizaka, Y. Ishida, N. Katayama, K. Ohgushi, T. Kiss, M. Okawa, T. Togashi, X. -Y. Wang, C. -T. Chen, S. Watanabe, R. Kadota, T. Oguchi, A. Chainani, S. Shin
PHYSICAL REVIEW LETTERS 104 (5) 057002-1-057002-4 2010/02
DOI: 10.1103/PhysRevLett.104.057002
ISSN: 0031-9007
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Deformation microtextures in CaIrO3 post-perovskite under high stress conditions using a laser-heated diamond anvil cell Peer-reviewed
N. Miyajima, K. Niwa, F. Heidelbach, T. Yagi, K. Ohgushi
INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50 215 012097-1-012097-6 2010
DOI: 10.1088/1742-6596/215/1/012097
ISSN: 1742-6588
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High-Pressure Ac Specific Heat Technique with Cubic Anvil Apparatus Peer-reviewed
K. Matsubayashi, M. Hedo, I. Umehara, N. Katayama, K. Ohgushi, A. Yamada, K. Munakata, T. Matsumoto, Y. Uwatoko
INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50 215 012187-1-012187-4 2010
DOI: 10.1088/1742-6596/215/1/012187
ISSN: 1742-6588
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Variation in Electronic State of Ba(Fe1-xCox)(2)AS(2) Alloy as Investigated in Terms of Transport Properties Peer-reviewed
Naoyuki Katayama, Yoko Kiuchi, Yoshitaka Matsushita, Kenya Ohgushi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78 (12) 123702-1-123702-4 2009/12
ISSN: 0031-9015
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Spontaneous Formation of a Superconducting and Antiferromagnetic Hybrid State in SrFe2As2 under High Pressure Peer-reviewed
K. Kitagawa, N. Katayama, H. Gotou, T. Yagi, K. Ohgushi, T. Matsumoto, Y. Uwatoko, M. Takigawa
PHYSICAL REVIEW LETTERS 103 (25) 257002-1-257002-4 2009/12
DOI: 10.1103/PhysRevLett.103.257002
ISSN: 0031-9007
eISSN: 1079-7114
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Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S=1/2 spins Peer-reviewed
K. Ohgushi, T. Yagi, H. Gotou, Y. Kiuchi, Y. Ueda
PHYSICA B-CONDENSED MATTER 404 (19) 3261-3263 2009/10
DOI: 10.1016/j.physb.2009.07.084
ISSN: 0921-4526
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Magnetic-Order-Induced Crystal Symmetry Lowering in ACr(2)O(4) Ferrimagnetic Spinels Peer-reviewed
S. Bordacs, D. Varjas, I. Kezsmarki, G. Mihaly, L. Baldassarre, A. Abouelsayed, C. A. Kuntscher, K. Ohgushi, Y. Tokura
PHYSICAL REVIEW LETTERS 103 (7) 077205-1-077205-4 2009/08
DOI: 10.1103/PhysRevLett.103.077205
ISSN: 0031-9007
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Intrinsic Properties of AFe(2)As(2) (A = Ba, Sr) Single Crystal under Highly Hydrostatic Pressure Conditions Peer-reviewed
Kazuyuki Matsubayashi, Naoyuki Katayama, Kenya Ohgushi, Atsushi Yamada, Koji Munakata, Takehiko Matsumoto, Yoshiya Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78 (7) 073706-1-073706-4 2009/07
ISSN: 0031-9015
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Antiferromagnetism of SrFe2As2 Studied by Single-Crystal As-75-NMR Peer-reviewed
Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, Masashi Takigawa
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 78 (6) 063706-1-063706-4 2009/06
ISSN: 0031-9015
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Resonant x-ray magnetoelectric effect in a centrosymmetric spinel oxide Peer-reviewed
M. Matsubara, Y. Shimada, K. Ohgushi, T. Arima, Y. Tokura
PHYSICAL REVIEW B 79 (18) 180407(R) -1-180407(R) -4 2009/05
DOI: 10.1103/PhysRevB.79.180407
ISSN: 1098-0121
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Study of electronic states of a pyrochlore-type molybdate (Sm2Mo2O7) at low temperature by means of hard x-ray photoemission spectroscopy Peer-reviewed
A. Higashiya, S. Imada, H. Fujiwara, A. Sekiyama, S. Suga, A. Yamasaki, Y. Taguchi, M. Iwama, K. Ohgushi, Y. Tokura, T. Ishikawa
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4 150 042055-1-042055-4 2009
DOI: 10.1088/1742-6596/150/4/042055
ISSN: 1742-6588
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Commensurate Itinerant Antiferromagnetism in BaFe(2)AS(2): As-75-NMR Studies on a Self-Flux Grown Single Crystal Peer-reviewed
Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, Makoto Yoshida, Masashi Takigawa
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 77 (11) 114709-1-114709-6 2008/11
ISSN: 0031-9015
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Magnetoelectric control of spin-chiral ferroelectric domains in a triangular lattice antiferromagnet Peer-reviewed
Kenta Kimura, Hiroyuki Nakamura, Kenya Ohgushi, Tsuyoshi Kimura
PHYSICAL REVIEW B 78 (14) 140401(R)-1-140401(R)-4 2008/10
DOI: 10.1103/PhysRevB.78.140401
ISSN: 1098-0121
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CaPtO3 as a novel post-perovskite oxide Peer-reviewed
Kenya Ohgushi, Yoshitaka Matsushita, Nobuyoshi Miyajima, Yoshio Katsuya, Masahiko Tanaka, Fujio Izumi, Hirotada Gotou, Yutaka Ueda, Takehiko Yagi
PHYSICS AND CHEMISTRY OF MINERALS 35 (4) 189-195 2008/05
DOI: 10.1007/s00269-007-0211-5
ISSN: 0342-1791
eISSN: 1432-2021
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Generation of electric polarization with rotating magnetic field in helimagnet ZnCr2Se4 Peer-reviewed
Hiroshi Murakawa, Yoshinori Onose, Kenya Ohgushi, Shintaro Ishiwata, Yoshinori Tokura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 77 (4) 043709-1-043709-4 2008/04
ISSN: 0031-9015
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Magnetic, optical, and magnetooptical properties of spinel-type ACr(2)X(4) (A = Mn, Fe, Co, Cu, Zn, Cd; X = O, S, Se) Peer-reviewed
Kenya Ohgushi, Yoichi Okimoto, Takeshi Ogasawara, Shigeki Miyasaka, Yoshinori Tokura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 77 (3) 034713-1-034713-16 2008/03
ISSN: 0031-9015
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Lattice preferred orientation in CaIrO3 perovskite and post-perovskite formed by plastic deformation under pressure Peer-reviewed
Ken Niwa, Takehiko Yagi, Kenya Ohgushi, Sebastien Merkel, Nobuyoshi Miyajima, Takumi Kikegawa
PHYSICS AND CHEMISTRY OF MINERALS 34 (9) 679-686 2007/11
DOI: 10.1007/s00269-007-0182-6
ISSN: 0342-1791
eISSN: 1432-2021
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Ca1-xNaxIrO3 as a novel quasi-two-dimensional Mott transition system Peer-reviewed
Kenya Ohgushi, Hirotada Gotou, Takehiko Yagi, Yoko Kiuchi, Fumiko Sakai, Yutaka Ueda
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 460 534-535 2007/09
DOI: 10.1016/j.physc.2007.03.133
ISSN: 0921-4534
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Electron correlation and the metal-insulator transition of the pyrochlore molybdates R2Mo2O7 (R=Nd, Sm, Gd, Tb, Y) Peer-reviewed
A. Higashiya, S. Imada, A. Yamasaki, A. Irizawa, A. Sekiyama, S. Suga, Y. Taguchi, M. Iwama, K. Ohgushi, Y. Tokura
PHYSICAL REVIEW B 75 (15) 155106-1-155106-7 2007/04
DOI: 10.1103/PhysRevB.75.155106
ISSN: 1098-0121
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Spin-flop multicritical phenomena in Mn(2)AS(4)(A = Si and Ge) Peer-reviewed
K. Ohgushi, Y. Ueda
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 310 (2) 1291-1292 2007/03
DOI: 10.1016/j.jmmm.2006.10.443
ISSN: 0304-8853
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Spin-lattice coupling in ferroelectric spiral magnets: Comparison between the cases of (Tb,Dy)MnO3 and CoCr2O4 Peer-reviewed
Taka-hisa Arima, Yuichi Yamasaki, Takeshi Goto, Satoshi Iguchi, Kenya Ohgushi, Shigeki Miyasaka, Yoshinori Tokura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76 (2) 023602-1-023602-4 2007/02
ISSN: 0031-9015
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Metal-insulator transition in Ca(1-x)Na(x)IrO(3) with post-perovskite structure Peer-reviewed
K. Ohgushi, H. Gotou, T. Yagi, Y. Kiuchi, F. Sakai, Y. Ueda
PHYSICAL REVIEW B 74 (24) 241104(R)-1-241104(R)-4 2006/12
DOI: 10.1103/PhysRevB.74.241104
ISSN: 1098-0121
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Photoinduced dynamics of sublattice magnetization in ferrimagnets: FeCr2S4 and CoCr2S4 Peer-reviewed
Takeshi Ogasawara, Kenya Ohgushi, Hiroshi Okamoto, Yoshinori Tokura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75 (8) 083707-1-083707-4 2006/08
ISSN: 0031-9015
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Crystal morphology and dislocation microstructures of CaIrO3: A TEM study of an analogue of the MgSiO3 post-perovskite phase Peer-reviewed
Nobuyoshi Miyajima, Kenya Ohgushi, Masaki Ichihara, Takehiko Yagi
GEOPHYSICAL RESEARCH LETTERS 33 (12) L12302-1-L12302-4 2006/06
DOI: 10.1029/2005GL025001
ISSN: 0094-8276
eISSN: 1944-8007
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High-pressure synthesis and magnetic properties of orthorhombic CuRh2O4 Peer-reviewed
K Ohgushi, H Gotou, T Yagi, Y Ueda
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75 (2) 023707-1-023707-3 2006/02
ISSN: 0031-9015
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Anisotropic anomalous Hall effect of topological origin in carrier-doped FeCr2S4 Peer-reviewed
K Ohgushi, S Miyasaka, Y Tokura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75 (1) 013710-1-013710-4 2006/01
ISSN: 0031-9015
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Anomalous magnetic properties of Fe2GeS4 and Mn2SiS4 Peer-reviewed
K. Ohgushi, Y. Ueda
LOW TEMPERATURE PHYSICS, PTS A AND B 850 1277-+ 2006
DOI: 10.1063/1.2355172
ISSN: 0094-243X
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Anomalous magnetic properties near the spin-flop bicritical point in Mn(2)AS(4) (A=Si and Ge) Peer-reviewed
K Ohgushi, Y Ueda
PHYSICAL REVIEW LETTERS 95 (21) 217202-1-217202-4 2005/11
DOI: 10.1103/PhysRevLett.95.217202
ISSN: 0031-9007
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Gigantic Kerr rotation induced by a d-d transition resonance in MCr2S4 (M = Mn, Fe) Peer-reviewed
K Ohgushi, T Ogasawara, Y Okimoto, S Miyasaka, Y Tokura
PHYSICAL REVIEW B 72 (15) 155114-1-155114-5 2005/10
DOI: 10.1103/PhysRevB.72.155114
ISSN: 1098-0121
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Ferromagnetic metal to spin-glass insulator transition in pyrochlore-type molybdates R2Mo2O7 studied with photoemission and XMCD Peer-reviewed
S Imada, A Higashiya, M Okazaki, M Kashida, A Sekiyama, Y Taguchi, M Iwama, K Ogusi, Y Tokura, S Suga
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 144 711-713 2005/06
DOI: 10.1016/j.elspec.2005.01.127
ISSN: 0368-2048
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General features of photoinduced spin dynamics in ferromagnetic and ferrimagnetic compounds Peer-reviewed
T Ogasawara, K Ohgushi, Y Tomioka, KS Takahashi, H Okamoto, M Kawasaki, Y Tokura
PHYSICAL REVIEW LETTERS 94 (8) 087202-1-087202-4 2005/03
DOI: 10.1103/PhysRevLett.087202
ISSN: 0031-9007
eISSN: 1079-7114
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The spin chirality induced anomalous Hall effect in pyrochlore ferromagnets Peer-reviewed
Y Taguchi, Y Oohara, H Yoshizawa, N Nagaosa, T Sasaki, S Awaji, Y Iwasa, T Tayama, T Sakakibara, S Iguchi, K Ohgushi, T Ito, Y Tokura
JOURNAL OF PHYSICS-CONDENSED MATTER 16 (11) S599-S606 2004/03
ISSN: 0953-8984
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Optical probe of the metal-insulator transition in pyrochlore-type molybdate Peer-reviewed
Y. Taguchi, K. Ohgushi, Y. Tokura
Physical Review B - Condensed Matter and Materials Physics 65 (11) 1-5 2002
DOI: 10.1103/PhysRevB.65.115102
ISSN: 1550-235X 1098-0121
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Spin anisotropy and quantum Hall effect in the kagomé lattice: Chiral spin state based on a ferromagnet Peer-reviewed
K. Ohgushi, S. Murakami, N. Nagaosa
Physical Review B - Condensed Matter and Materials Physics 62 (10) R6065-R6068 2000/09/01
DOI: 10.1103/PhysRevB.62.R6065
ISSN: 0163-1829
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Spin anisotropy and quantum Hall effect in the kagome lattice: Chiral spin state based on a ferromagnet Peer-reviewed
K Ohgushi, S Murakami, N Nagaosa
PHYSICAL REVIEW B 62 (10) R6065-R6068 2000/09
DOI: 10.1103/PhysRevB.62.R6065
ISSN: 1098-0121
eISSN: 1550-235X
Books and Other Publications 16
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時間反転対称性の破れた反強磁性体におけるピエゾ磁気効果
青山拓也, 小室源, 大串研也
高圧力の科学と技術 2024/04
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梯子型鉄系化合物BaFe2(S1-xSex)3におけるネマティック秩序
青山拓也, 大串研也
2023/05
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コタイ ブツリ 〈 キタエフスピン エキタイ ノ シン テンカイ 〉 トクシュウゴウ ; シン ブッシツ カイハツ
2022/11
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空間反転対称性の破れた量子液晶の探索
大串 研也, 木村 剛
2021/07
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BaMn2As2における磁気四極子秩序
大串研也, 江見知俊
2020
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梯子型鉄系化合物BaFe2S3における圧力誘起超伝導
山内 徹, 高橋 博樹, 南部 雄亮, 佐藤 卓, 平田 靖透, 大串 研也
アグネ技術センター 2019/01
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梯子型鉄系超伝導体の元素置換効果
大串 研也, 平田 靖透, 山内 徹
2019/01
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固体の量子伝導の理解に向けて
大串 研也
2017/02
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遷移金属化合物における強相関電子物性
大串 研也
2015/11
DOI: 10.14989/204769
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新しいバナジウム系超伝導体の発見
大串 研也
2015/04/20
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アンチポストペロブスカイト構造を有する超伝導体の発見
大串 研也
2014/08/05
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ポストペロブスカイト型化合物CaIrO3の磁気構造
大串 研也, 大隅 寛幸, 山浦 淳一, 有馬 孝尚
The Crystallographic Society of Japan 2014/03/05
DOI: 10.5940/jcrsj.56.36
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5d遷移金属パイロクロア酸化物における低温磁気構造の研究
山浦 淳一, 大串 研也, 広井 善二
The Crystallographic Society of Japan 2013/05/01
DOI: 10.5940/jcrsj.55.116
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ポストペロブスカイトの物性科学
大串研也
2011
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Exploratory synthesis and characterization of post-perovskite oxide
Kenya Ohgushi
2008
DOI: 10.4131/jshpreview.18.237
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フラストレーションのある強磁性体における異常ホール効果
村上 修一, 大串 研也, 永長 直人
2000
Research Projects 1
-
Exploring quantum emergence through correlation design science
Offer Organization: Japan Society for the Promotion of Science
System: Grants-in-Aid for Scientific Research
Category: Grant-in-Aid for Transformative Research Areas (A)
Institution: The University of Tokyo
2025/04/01 - 2030/03/31