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Yoichi Ikeda

Section

Institute for Materials Research

Job title

Associate Professor

Degree

博士（理学）（北海道大学）
修士（理学）（富山大学）

researchmap

https://researchmap.jp/7000017816

J-GLOBAL ID

201601010638982470

Research History 4

2025/05 - Present

Tohoku University　Institute for Materials Research　Associate Professor
2016/02 - 2025/04

Tohoku University　Institute for Materials Research　Assistant professor
2013/02 - 2016/01

The University of Tokyo　Neutron Science Laboratory Affiliated to the ISSP　Project researcher
2010/04 - 2013/01

Okayama University　The Graduate School of Natural Science and Technology

Education 3

Hokkaido University　Graduate School of Science　Department of Quantum and Condensed-Matter Physics

2007/04 - 2010/03
University of Toyama　Graduate School of Science and Engineering　Department of Physics

2005/04 - 2007/03
University of Toyama　Faculty of Science　Department of Physics

2001/04 - 2005/03

Committee Memberships 3

日本中性子科学会　波紋（学会誌）地区編集委員

2021/04 - 2024/03
日本中性子科学会　波紋編集委員会

2018/04 - 2021/03
日本中性子科学会　第20回日本中性子科学会年会実行委員

2020/04 - 2020/11

Professional Memberships 5

The Japan institute for metals and materials

2019 - Present
日本熱測定学会

2023 -
THE JAPAN SOCIETY OF APPLIED PHYSICS
THE JAPANESE SOCIETY FOR NEUTRON SCIENCE
THE PHYSICAL SOCIETY OF JAPAN

Research Interests 1

solid state physics

Research Areas 2

Nanotechnology/Materials / Metallic materials /
Natural sciences / Magnetism, superconductivity, and strongly correlated systems /

Awards 1

富山大学理工学研究科副研究科長賞（副研究科長平井美郎）

2007/03　富山大学理工学研究科

Papers 73

Unusual spin dynamics in the van der Waals antiferromagnet FeGa₂S₄

Yifei Tang, Yoshihiko Umemoto, Yo Kawamoto, Masahiro Kawamata, Shinichiro Asai, Yoichi Ikeda, Masaki Fujita, Yusuke Nambu

Journal of Physics: Condensed Matter　2024/10/11
Publisher: IOP Publishing
DOI： 10.1088/1361-648x/ad861a 　

ISSN： 0953-8984

eISSN： 1361-648X

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Abstract Spin dynamics in the van der Waals antiferromagnet FeGa₂S₄ with triangular lattices are investigated using magnetometry, neutron scattering, and muon spin relaxation measurements. The characteristic spin relaxation time is thoroughly clarified over thirteen orders of magnitude. Although the temperature dependence of DC and AC susceptibilities recalls a conventional spin-glass transition, nonlinear susceptibilities showing no divergences at the anomalous temperature, T* = 16.87(7) K, deny that and instead hint at other mechanisms. Elastic neutron scattering together with previously measured muon results depict a slowly fluctuated (~10^-5 sec) spin state above T*. In juxtaposing the underlying simplest structure among frustrated magnets with an intricate hierarchy of time scales, FeGa₂S₄ can be a playground for studying temporal spin correlations in the two-dimensional limit.
Neutron Powder Diffractometer HERMES — After the Decade-Long Shutdown Invited Peer-reviewed

Yusuke Nambu, Yoichi Ikeda, Takanori Taniguchi, Manabu Ohkawara, Maxim Avdeev, Masaki Fujita

Journal of the Physical Society of Japan　93　(9)　091005　2024/09/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.93.091005 　

ISSN： 0031-9015

eISSN： 1347-4073
Materials Science and Condensed Matter Physics on PATH Triple-Axis Spectrometers AKANE and TOPAN Invited Peer-reviewed

Yoichi Ikeda, Takanori Taniguchi, Shusuke Takada, Yusuke Nambu, Manabu Ohkawara, Masaki Fujita

Journal of the Physical Society of Japan　93　(9)　091003　2024/09/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.93.091003 　

ISSN： 0031-9015

eISSN： 1347-4073
Search for Significant Short-Range Ordering in Medium-Entropy Alloys Tr-Co-Ni (Tr = Cr, Mn, and Fe) Peer-reviewed

Saiki Futami, Yoichi Ikeda, Hong-Fei Zhao, Yoshihiko Umemoto, Takashi Honda, Masaki Fujita

MATERIALS TRANSACTIONS　65　(9)　995-1000　2024/09/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-ma2024007 　

ISSN： 1345-9678

eISSN： 1347-5320
Tilted stripes origin in La1.88Sr0.12CuO4 revealed by anisotropic next-nearest neighbor hopping

Wei He, Jiajia Wen, Hong-Chen Jiang, Guangyong Xu, Wei Tian, Takanori Taniguchi, Yoichi Ikeda, Masaki Fujita, Young S. Lee

Communications Physics　7　(1)　2024/07/31
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s42005-024-01753-z 　

eISSN： 2399-3650

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Abstract Spin- and charge- stripe order has been extensively studied in the superconducting cuprates, among which underdoped La_2−xSr_xCuO₄ (LSCO) is an archetype with static spin stripes at low temperatures. An intriguing, but not completely understood, phenomenon in LSCO is that the stripes are tilted away from the high-symmetry Cu-Cu directions. Using high-resolution neutron scattering on LSCO with x = 0.12, we find two coexisting phases at low temperatures, one with static spin stripes and the other with fluctuating ones, both sharing the same tilt angle. Our numerical calculations using the doped Hubbard model elucidate the tilting’s origin, attributing it to anisotropic next-nearest neighbor hopping $${t}^{ { \prime} }$$, consistent with the material’s slight orthorhombicity. Our results underscore the model’s success in describing specific details of the ground state of this real material and highlight the role of $${t}^{ { \prime} }$$ in the Hamiltonian, revealing the delicate interplay between stripes and superconductivity across theoretical and experimental contexts.
Magnetic Properties of YbBe₁₃ Probed by Neutron Scattering and Thermodynamic Measurements Peer-reviewed

Yusei Shimizu, Yoichi Ikeda, Toshiro Sakakibara, Yoshiya Homma, Dai Aoki

Journal of the Physical Society of Japan　93　(7)　073701　2024/07/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.93.073701 　

ISSN： 0031-9015

eISSN： 1347-4073
High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

Kohei Matsuzaki, Kei Saito, Yoichi Ikeda, Yusuke Nambu, Masatomo Yashima

Journal of the American Chemical Society　2024/06/25
Publisher: American Chemical Society (ACS)
DOI： 10.1021/jacs.4c04325 　

ISSN： 0002-7863

eISSN： 1520-5126
Combination of crystal growth with optical floating zone and evaluation of Nd3+:LaAlO3 crystals with the dynamic nuclear polarization of 139La and 27Al Peer-reviewed

Kohei Ishizaki, Ikuo Ide, Masaki Fujita, Hiroki Hotta, Yuki Ito, Masataka Iinuma, Yoichi Ikeda, Takahiro Iwata, Masaaki Kitaguchi, Hideki Kohri, Taku Matsushita, Daisuke Miura, Yoshiyuki Miyachi, Hirohiko M. Shimizu, Masaru Yosoi

Review of Scientific Instruments　95　(6)　2024/06/01
Publisher: AIP Publishing
DOI： 10.1063/5.0202680 　

ISSN： 0034-6748

eISSN： 1089-7623

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Producing a polarized lanthanum (La) target with high polarization and long relaxation time is crucial for realizing time-reversal violation experiments using polarized neutron beams. We use a LaAlO3 crystal doped with a small amount of Nd3+ ions for the polarized lanthanum target. Optimizing the amount of Nd3+ ions is considerably important because the achievable polarization and relaxation time strongly depend on this amount. We established a fundamental method to grow single crystals of Nd3+:LaAlO3 using an optical floating zone method that employs halogen lamps and evaluated the crystals with the dynamic nuclear polarization (DNP) method for polarizing nuclear spins. Two crystal samples were grown by ourselves and evaluated with the DNP at 1.3 K and 2.3 T for the first time, except for the target materials of protons. The enhancement of nuclear magnetic resonance signals for 139La and 27Al was successfully observed, and the enhancement factors were eventually 3.5 ± 0.3 and 13 ± 3 for the samples with Nd3+ ions of 0.05 and 0.01 mol. %, respectively. These enhancement factors correspond to absolute vector polarizations of 0.27% ± 0.02% (Nd3+ 0.05 mol. %) and 1.4% ± 0.3% (Nd3+ 0.01 mol. %). Although the obtained polarizations are still low, they are acceptable as a first step. The combination scheme of the crystal growth and the evaluation of the crystals is found to be effectively applicable for optimizing the amount of Nd3+ ions for improving the performance of the polarized target.
Study of Magnetic Environment for Neutron Spin Filters Using Polarized ³He at J-PARC and JRR-3

Shusuke Takada, Masaki Fujita, Yu Goto, Takashi Honda, Kazutaka Ikeda, Yoichi Ikeda, Takashi Ino, Koji Kaneko, Ryuju Kobayashi, Manabu Okawara, Takayuki Oku, Takuya Okudaira, Toshiya Otomo, Shingo Takahashi

Proceedings of 11th International Workshop on Sample Environment at Scattering Facilities (ISSE Workshop Nasu 2022)　2024/03/01
Publisher: Journal of the Physical Society of Japan
DOI： 10.7566/jpscp.41.011005 　
Quantum criticality in YbCu4Ni Peer-reviewed

Kotaro Osato, Takanori Taniguchi, Hirotaka Okabe, Takafumi Kitazawa, Masahiro Kawamata, Zhao Hongfei, Yoichi Ikeda, Yusuke Nambu, Dita Puspita Sari, Isao Watanabe, Jumpei G. Nakamura, Akihiro Koda, Jun Gouchi, Yoshiya Uwatoko, Masaki Fujita

Physical Review B　109　024435　2024/01/29

DOI： 10.1103/PhysRevB.109.024435 　
Dimer-Mediated Cooperative Mechanism of Ultrafast-Ion Conduction in Hexagonal Perovskite-Related Oxides Peer-reviewed

Yuichi Sakuda, Taito Murakami, Maxim Avdeev, Kotaro Fujii, Yuta Yasui, James R. Hester, Masato Hagihala, Yoichi Ikeda, Yusuke Nambu, Masatomo Yashima

Chemistry of Materials　35　(22)　9774-9788　2023/11/14
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acs.chemmater.3c02378 　

ISSN： 0897-4756

eISSN： 1520-5002
Local Atomic Displacements and Sign of the Structural Transformation in Medium-Entropy Alloys Observed in Extended X-ray Absorption Fine Structure Spectra Peer-reviewed

Yoichi Ikeda, Yoshihiko Umemoto, Daiju Matsumura, Takuya Tsuji, Yuki Hashimoto, Takafumi Kitazawa, Masaki Fujita

MATERIALS TRANSACTIONS　64　(9)　2254-2260　2023/09/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-m2023043 　

ISSN： 1345-9678

eISSN： 1347-5320
Search for Short-Range Ordering in Medium-Entropy Alloys Invited Peer-reviewed

Yoichi IKEDA, Yoshihiko UMEMOTO, Masaki FUJITA

Nihon Kessho Gakkaishi　65　(3)　192-197　2023/08/31
Publisher: The Crystallographic Society of Japan
DOI： 10.5940/jcrsj.65.192 　

ISSN： 0369-4585

eISSN： 1884-5576
Observation of field-induced single-ion magnetic anisotropy in a multiorbital Kondo alloy (Lu,Yb)Rh2Zn20 Peer-reviewed

T. Kitazawa, Y. Ikeda, T. Sakakibara, A. Matsuo, Y. Shimizu, Y. Tokunaga, Y. Haga, K. Kindo, Y. Nambu, K. Ikeuchi, K. Kamazawa, M. Ohkawara, M. Fujita

Physical Review B　108　(8)　2023/08/03
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevb.108.085105 　

ISSN： 2469-9950

eISSN： 2469-9969
Time-Temperature Dependent Short- and Long-Range Structural Transformation in Medium-Entropy Alloys Peer-reviewed

Yoshihiko Umemoto, Yoichi Ikeda, Masaki Fujita

MATERIALS TRANSACTIONS　64　(8)　2018-2021　2023/08/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-m2023071 　

ISSN： 1345-9678

eISSN： 1347-5320
High proton conduction in Ba2LuAlO5 with highly oxygen-deficient layers Peer-reviewed

Riho Morikawa, Taito Murakami, Kotaro Fujii, Maxim Avdeev, Yoichi Ikeda, Yusuke Nambu, Masatomo Yashima

Communications Materials　2023/06/06

DOI： 10.1038/s43246-023-00364-5 　
Relation between the Lattice Volume and Characteristic Temperatures in Yb-based Multiorbital Kondo Systems (R, Yb)Rh₂Zn₂₀ (R = Sc, Lu, and Y) Peer-reviewed

Takafumi Kitazawa, Yoichi Ikeda, Yusei Shimizu, Akira Matsuo, Minoru Yamashita, Koichi Kindo, Masaki Fujita

Proceedings of the 29th International Conference on Low Temperature Physics (LT29)　2023/05/22
Publisher: Journal of the Physical Society of Japan
DOI： 10.7566/jpscp.38.011111 　
Crystal field excitation in the chiral helimagnet YbNi3Al9 Peer-reviewed

Mitsuru Tsukagoshi, Suguru Kishida, Kenshin Kurauchi, Daichi Ito, Koya Kubo, Takeshi Matsumura, Yoichi Ikeda, Shota Nakamura, Shigeo Ohara

Physical Review B　107　(10)　2023/03/28
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevb.107.104425 　

ISSN： 2469-9950

eISSN： 2469-9969
Optically Polarized Alkali Metal Cell for Muonic Helium Measurements Peer-reviewed

Takashi Ino, Seiso Fukumura, Patrick Strasser, Masaki Fujita, Yoichi Ikeda, Sohtaro Kanda, Masaaki Kitaguchi, Shoichiro Nishimura, Takayuki Oku, Takuya Okudaira, Hirohiko M. Shimizu, Koichiro Shimomura

JPS Conf. Proc.　37　(021208)　(1-5)　2022/12/26
Publisher: Journal of the Physical Society of Japan
DOI： 10.7566/jpscp.37.021208 　
Anomalous Thermal Expansion in a CuAl₂-type Superconductor CoZr₂ Peer-reviewed

Yoshikazu Mizuguchi, Md. Riad Kasem, Yoichi Ikeda

Journal of the Physical Society of Japan　91　(10)　2022/10/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.91.103601 　

ISSN： 0031-9015

eISSN： 1347-4073
Superconductivity of high-entropy-alloy-type transition-metal zirconide (Fe,Co,Ni,Cu,Ga)Zr₂ Peer-reviewed

Md Riad Kasem, Hiroto Arima, Yoichi Ikeda, Aichi Yamashita, Yoshikazu Mizuguchi

Journal of Physics: Materials　5　(4)　045001-045001　2022/09/12
Publisher: IOP Publishing
DOI： 10.1088/2515-7639/ac8e34 　

eISSN： 2515-7639

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Abstract We synthesized a new high-entropy-alloy-type (HEA-type) superconductor (Fe,Co,Ni,Cu,Ga)Zr₂ with a T_c of 2.9 K. The EDX analyses revealed that the actual composition of the transition-metal site (Tr-site) is Tr = Fe_0.17(1)Co_0.18(2)Ni_0.21(2)Cu_0.25(1)Ga_0.19(1), which gives the configurational entropy of mixing ΔS_mix = 1.60 R for the Tr site. Neutron powder diffraction revealed that the sample has a tetragonal CuAl₂-type (space group: #140). The lattice constant of a monotonically decreases with decreasing temperature, but the lattice constant of c does not exhibit a clear shrinkage. Isotropic displacement parameter for both the Tr and Zr sites are large, which is probably caused by the HEA-type Tr site. The small temperature dependences of U_iso for both sites also indicate the presence of the local structural disorder in (Fe,Co,Ni,Cu,Ga)Zr₂. From electrical resistivity, magnetic susceptibility, and specific heat measurements, bulk superconductivity was confirmed.
SrV_0.3Fe_0.7O_2.8: A Vacancy-Ordered Fe-Based Perovskite Exhibiting Room-Temperature Magnetoresistance Peer-reviewed

Teppei Nagase, Takumi Nishikubo, Masayuki Fukuda, Yuki Sakai, Kei Shigematsu, Yoichi Ikeda, Yusuke Nambu, Qiang Zhang, Masaaki Matsuda, Ko Mibu, Masaki Azuma, Takafumi Yamamoto

Inorganic Chemistry　61　(24)　8987-8991　2022/06/03
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acs.inorgchem.2c01137 　

ISSN： 0020-1669

eISSN： 1520-510X
Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability Peer-reviewed

Masashi Nakamura, Hirofumi Akamatsu, Kotaro Fujii, Yusuke Nambu, Yoichi Ikeda, Tomoki Kanazawa, Shunsuke Nozawa, Masatomo Yashima, Katsuro Hayashi, Kazuhiko Maeda

Inorganic Chemistry　61　(17)　6584-6593　2022/04/17
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acs.inorgchem.2c00398 　

ISSN： 0020-1669

eISSN： 1520-510X
Oval-cycloidal Magnetic Structure with Phase-shift in the Non-centrosymmetric Tetragonal Compound CePdSi₃ Peer-reviewed

Daichi Ueta, Masahiro Yoshida, Tomohiro Kobuke, Yoichi Ikeda, Akiko Nakao, Taketo Moyoshi, Koji Munakata, Yaohua Liu, Takatsugu Masuda, Hideki Yoshizawa

Journal of the Physical Society of Japan　90　(11)　114702　2021/11/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.90.114702 　

ISSN： 0031-9015

eISSN： 1347-4073
Crystalline Electric Field Level Scheme of Non-centrosymmetric CeRhSi3 and CeIrSi3 Peer-reviewed

Daichi Ueta, Tomohiro Kobuke, Hiroki Shibata, Masahiro Yoshida, Yoichi Ikeda, Shinichi Itoh, Tetsuya Yokoo, Takatsugu Masuda, Hideki Yoshizawa

Journal of the Physical Society of Japan　90　(10)　104706-104706　2021/10/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.90.104706 　

ISSN： 0031-9015

eISSN： 1347-4073
Complex Magnetic Phase Diagram in the Non-Centrosymmetric Compound CePtSi3 Peer-reviewed

Daichi Ueta, Masahiro Yoshida, Tomohiro Kobuke, Yoichi Ikeda, Takatsugu Masuda, Hideki Yoshizawa

Journal of the Physical Society of Japan　90　(6)　064712-064712　2021/06/15
Publisher: Physical Society of Japan
DOI： 10.7566/jpsj.90.064712 　

ISSN： 0031-9015

eISSN： 1347-4073
Two-Dimensional Superconducting Fluctuations Associated with Charge-Density-Wave Stripes in La1.87Sr0.13Cu0.99Fe0.01O4 Peer-reviewed

H. Huang, S.-J. Lee, Y. Ikeda, T. Taniguchi, M. Takahama, C.-C. Kao, M. Fujita, J.-S. Lee

Physical Review Letters　126　(16)　2021/04/21
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevlett.126.167001 　

ISSN： 0031-9007

eISSN： 1079-7114
Dynamical Studies in Condensed Matter on High Resolution Chopper Spectrometer (HRC) —2nd Phase of HRC Project— Peer-reviewed

Shinichi Itoh, Takatsugu Masuda, Tetsuya Yokoo, Hideki Yoshizawa, Minoru Soda, Shinichiro Asai, Yoichi Ikeda, Soshi Ibuka, Masahiro Yoshida, Takafumi Hawai, Hiraku Saito, Daichi Kawana, Ryosuke Sugiura, Toshio Asami, Yoshiaki Ihata

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)　2021/03/26
Publisher: Journal of the Physical Society of Japan
DOI： 10.7566/jpscp.33.011058 　
Two Qualitatively Different Superconducting Phases under High Pressure in Single-Crystalline CeNiGe3 Peer-reviewed

Shunsaku Kitagawa, Shingo Araki, Tatsuo C. Kobayashi, Yoichi Ikeda

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　89　(6)　2020/06

DOI： 10.7566/JPSJ.89.063702 　

ISSN： 0031-9015
Magnetic structure of a non-centrosymmetric CePtSi3 Peer-reviewed

D. Ueta, M. Yoshida, Y. Ikeda, Y. Liu, T. Hong, T. Masuda, H. Yoshizawa

AIP Advances　8　(11)　115006-1-115006-5　2018/10
Publisher: AIP Publishing
DOI： 10.1063/1.5042736 　

eISSN： 2158-3226

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Neutron diffraction experiments have been performed on single crystalline samples of CePtSi3. We found that the incommensurate magnetic propagation vector τ1 = (±0.283, 0, 0) in the phase I (2.2 ∼ 4.8 K) switches to the commensurate vectors τ2 = (±0.25, 0, 0) and τ3 = (±0.25, 0, ±1) in the phase III (∼ 2.8 K) at zero field. Although the magnetic structure of CePtSi3 in the phase I is a spin density wave similar to those in CeRhSi3, CeIrSi3, and CePdSi3, the magnetic structure in the phase III is commensurate unlike other CeTSi3 (T = Rh, Ir, Pd) compounds.
YUI and HANA: Control and visualization programs for HRC in J-PARC Peer-reviewed

Daichi Kawana, Minoru Soda, Masahiro Yoshida, Yoichi Ikeda, Toshio Asami, Ryosuke Sugiura, Hideki Yoshizawa, Takatsugu Masuda, Takafumi Hawai, Soshi Ibuka, Tetsuya Yokoo, Shinichi Itoh

Journal of Physics: Conference Series　1021　(1)　2018/06/04
Publisher: Institute of Physics Publishing
DOI： 10.1088/1742-6596/1021/1/012014 　

ISSN： 1742-6596 1742-6588
High Resolution Chopper Spectrometer HRC and Neutron Brillouin Scattering Peer-reviewed

Itoh Shinichi, Yokoo Tetsuya, Masuda Takatsugu, Yoshizawa Hideki, Soda Minoru, Ibuka Soshi, Ikeda Yoichi, Yoshida Masahiro, Hawai Takafumi, Kawana Daichi, Sugiura Ryosuke, Asami Toshio, Kawamura Yoshihisa, Shinozaki Tomoko, Ihata Yoshiaki

PROCEEDINGS OF THE JOINT CONFERENCE ON QUASIELASTIC NEUTRON SCATTERING AND THE WORKSHOP ON INELASTIC NEUTRON SPECTROMETERS (QENS/WINS 2016): PROBING NANOSCALE DYNAMICS IN ENERGY RELATED MATERIALS　1969　050002-1-050002-5　2018/05

DOI： 10.1063/1.5039299 　

ISSN： 0094-243X
Magnetic and thermodynamic studies on the charge and spin ordering in the highly-doped La2− xSrxCoO4 Peer-reviewed

Masahiro Yoshida, Daichi Ueta, Yoichi Ikeda, Tetsuya Yokoo, Shinichi Itoh, Hideki Yoshizawa

Physica B: Condensed Matter　536　338-341　2018/05/01
Publisher: Elsevier B.V.
DOI： 10.1016/j.physb.2017.10.081 　

ISSN： 0921-4526
Crystalline Electric Field Level Scheme of the Non‐Centrosymmetric CePtSi3 Peer-reviewed

Daichi Ueta, Tomohiro Kobuke, Masahiro Yoshida, Hideki Yoshizawa, Yoichi Ikeda, Shinichi Itoh, Tetsuya Yokoo

Physica B: Condensed Matter　536　21-23　2018/05/01
Publisher: Elsevier B.V.
DOI： 10.1016/j.physb.2017.09.110 　

ISSN： 0921-4526
Thermodynamic Investigation of Metamagnetic Transitions and Partial Disorder in the Quasi-Kagome Kondo Lattice CePdAl Peer-reviewed

Kenji Mochidzuki, Yusei Shimizu, Akihiro Kondo, Shota Nakamura, Shunichiro Kittaka, Yohei Kono, Toshiro Sakakibara, Yoichi Ikeda, Yosikazu Isikawa, Koichi Kindo

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　86　(3)　034709　2017/03

DOI： 10.7566/JPSJ.86.034709 　

ISSN： 0031-9015
Zn-site Substitution Effect in YbCo2Zn20

Riki Kobayashi, Haruki Takamura, Yasuyuki Higa, Yoichi Ikeda, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Hideki Yoshizawa, Naofumi Aso

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2016)　807　2017

DOI： 10.1088/1742-6596/807/1/012009 　

ISSN： 1742-6588

eISSN： 1742-6596
Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7 Peer-reviewed

Jun-ichi Yamaura, Keiki Takeda, Yoichi Ikeda, Naohisa Hirao, Yasuo Ohishi, Tatsuo C. Kobayashi, Zenji Hiroi

PHYSICAL REVIEW B　95　(2)　2017/01

DOI： 10.1103/PhysRevB.95.020102 　

ISSN： 2469-9950

eISSN： 2469-9969
Weak Ferromagnetism and Multiple Metamagnetic Transitions in the Non-centrosymmetric Tetragonal Compound CePdSi3 Peer-reviewed

Daichi Ueta, Yoichi Ikeda, Hideki Yoshizawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　85　(10)　014703　2016/10

DOI： 10.7566/JPSJ.85.104703 　

ISSN： 0031-9015
Superconductivity and non-Fermi-liquid behavior in the heavy-fermion compound CeCo$_{1-x}$Ni$_x$In$_5$ Peer-reviewed

Ryo Otaka, Makoto Yokoyama, Hiroaki Mashiko, Takeshi Hasegawa, Yusei Shimizu, Yoichi Ikeda, Kenichi Tenya, Shota Nakamura, Daichi Ueta, Hideki Yoshizawa, Toshiro Sakakibara

Journal of the Physical Society of Japan　85　094713　2016/07/29

DOI： 10.7566/JPSJ.85.094713 　

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The effect of off-plane impurity on superconductivity and non-Fermi-liquid (NFL) behavior in the layered heavy-fermion compound CeCo$_{1-x}$Ni$_x$In$_5$ is investigated by specific heat, magnetization, and electrical resistivity measurements. These measurements reveal that the superconducting (SC) transition temperature T$_c$ monotonically decreases from 2.3 K (x=0) to 0.8 K (x=0.20) with increasing x, and then the SC order disappears above x=0.25. At the same time, the Ni substitution yields the NFL behavior at zero field for x=0.25, characterized by the -ln T divergence in specific heat divided by temperature, C$_p$/T, and magnetic susceptibility, M/B. The NFL behavior in magnetic fields for x=0.25 is quite similar to that seen at around the SC upper critical field in pure CeCoIn$_5$, suggesting that both compounds are governed by the same antiferromagnetic quantum criticality. The resemblance of the doping effect on the SC order among Ni- , Sn-, and Pt-substituted CeCoIn5 supports the argument that the doped carriers are primarily responsible for the breakdown of the SC order. The present investigation further reveals the quantitative differences in the trends of the suppression of superconductivity between Ce(Co,Ni)In$_5$ and the other alloys, such as the rates of decrease in T$_c$, dT$_c$/dx, and specific heat jump at T$_c$, d($\Delta$C$_p$/T$_c$)/dx. We suggest that the occupied positions of the doped ions play an important role in the origin of these differences.
Inelastic Neutron Scattering Study of Stripe and Overdoped Checkerboard Ordering in Layered Nickel Oxide Nd2-xSrxNiO4 Peer-reviewed

Yoichi Ikeda, Shota Suzuki, Takuya Nakabayashi, Hideki Yoshizawa, Tetsuya Yokoo, Shinichi Itoh

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　85　(2)　023701　2016/03

DOI： 10.7566/JPSJ.85.023701 　

ISSN： 0031-9015
Single-Crystal Neutron Diffraction Study of the Heavy-Electron Superconductor CeNiGe3 Peer-reviewed

Yoichi Ikeda, Daichi Ueta, Hideki Yoshizawa, Akiko Nakao, Koji Munakata, Takashi Ohhara

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(12)　123701　2015/12

DOI： 10.7566/JPSJ.84.123701 　

ISSN： 0031-9015
Pauli-limited superconductivity and antiferromagnetism in the heavy-fermion compound CeCo(In1-xZnx)(5) Peer-reviewed

Makoto Yokoyama, Hiroaki Mashiko, Ryo Otaka, Yumi Sakon, Kenji Fujimura, Kenichi Tenya, Akihiro Kondo, Koichi Kindo, Yoichi Ikeda, Hideki Yoshizawa, Yusei Shimizu, Yohei Kono, Toshiro Sakakibara

PHYSICAL REVIEW B　92　(18)　184509　2015/11

DOI： 10.1103/PhysRevB.92.184509 　

ISSN： 2469-9950

eISSN： 2469-9969
Pressure-Temperature-Field Phase Diagram in the Ferromagnet U3P4 Peer-reviewed

Shingo Araki, Minami Hayashida, Naoto Nishiumi, Hiroki Manabe, Yoichi Ikeda, Tatsuo C. Kobayashi, Keizo Murata, Yoshihiko Inada, Piotr Wisniewski, Dai Aoki, Yoshichika Onuki, Etsuji Yamamoto, Yoshinori Haga

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(2)　024705　2015/02

DOI： 10.7566/JPSJ.84.024705 　

ISSN： 0031-9015
Transport and Thermodynamic Studies of Stripe and Checkerboard Ordering in Layered Nickel Oxides R2-xSrxNiO4 (R = La and Nd) Peer-reviewed

Yoichi Ikeda, Shota Suzuki, Takuya Nakabayashi, Hideki Yoshizawa, Tetsuya Yokoo, Shinichi Itoh

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(2)　023706　2015/02

DOI： 10.7566/JPSJ.84.023706 　

ISSN： 0031-9015
Resistance Anomalies Accompanying Crossover from Heavy-Fermion Regime to Intermediate-Valence Regime: A Study of Cu-Ni Substitution and Pressure Effects on CeCu2Si2 Peer-reviewed

Yoichi Ikeda, Yuzo Ito, Shingo Araki, Tatsuo C. Kobayashi, Hideki Yoshizawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(2)　024702　2015/02

DOI： 10.7566/JPSJ.84.024702 　

ISSN： 0031-9015
Characterization of Ferromagnetic Order in CePd2P2 Peer-reviewed

Y. Ikeda, H. Yoshizawa, S. Konishi, S. Araki, T. C. Kobayashi, T. Yokoo, S. Ito

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014)　592　012013　2015

DOI： 10.1088/1742-6596/592/1/012013 　

ISSN： 1742-6588
Science from the Initial Operation of HRC Peer-reviewed

S. Itoh, T. Yokoo, T. Masuda, H. Yoshizawa, M. Soda, Y. Ikeda, S. Ibuka, D. Kawana, T. J. Sato, Y. Nambu, K. Kuwahara, S. Yano, J. Akimitsu, Y. Kaneko, Y. Tokura, M. Fujita, M. Hase, K. Iwasa, H. Hiraka, T. Fukuda, K. Ikeuchi, K. Yoshida, T. Yamaguchi, K. Ono, Y. Endoh

JPS Conference Proceedings　8　034001　2015
Role of Valence Fluctuations in the Superconductivity of Ce122 Compounds Peer-reviewed

H. Yamaoka, Y. Ikeda, I. Jarrige, N. Tsujii, Y. Zekko, Y. Yamamoto, J. Mizuki, J. -F. Lin, N. Hiraoka, H. Ishii, K. -D. Tsuei, T. C. Kobayashi, F. Honda, Y. Onuki

PHYSICAL REVIEW LETTERS　113　(8)　086403　2014/08

DOI： 10.1103/PhysRevLett.113.086403 　

ISSN： 0031-9007

eISSN： 1079-7114
Charge Density Wave Transition in EuAl4 Peer-reviewed

Shingo Araki, Yoichi Ikeda, Tatsuo C. Kobayashi, Ai Nakamura, Yuichi Hiranaka, Masato Hedo, Takao Nakama, Yoshichika Onuki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　83　(1)　015001　2014/01

DOI： 10.7566/JPSJ.83.015001 　

ISSN： 0031-9015
Metamagnetic Transition of Itinerant Ferromagnet U3P4 under High Pressure Peer-reviewed

Araki S, Hayashida M, Nishiumi N, Manabe H, Ikeda Yoichi, Kobayashi Tatsuo C, Murata J, Inada Y, Wisniewski P, Aoki D, Onuki Y, Yamamoto E, Haga Y

JPS Conference Proceedings　3　011081-011081　2014

DOI： 10.7566/JPSCP.3.011081 　
Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe3 Peer-reviewed

Ikeda Yoichi, Tomijima T, Araki Shingo, Kobayashi Tatsuo C, Murata Keizo

JPS Conference Proceedings　3　015044　2014

DOI： 10.7566/JPSCP.3.015044 　
Valence Crossover of Ce Ions in CeCu2Si2 under High Pressure - Pressure Dependence of the Unit Cell Volume and the NQR Frequency Peer-reviewed

Tatsuo C. Kobayashi, Kenji Fujiwara, Keiki Takeda, Hisatomo Harima, Yoichi Ikeda, Takafumi Adachi, Yasuo Ohishi, Christoph Geibel, Frank Steglich

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　82　(11)　114701　2013/11

DOI： 10.7566/JPSJ.82.114701 　

ISSN： 0031-9015
Longitudinal magnetoresistance of Ce(Cu1-xNix)2Si2 Peer-reviewed

Yoichi Ikeda, Shingo Araki, Tatsuo C. Kobayashi

Journal of the Korean Physical Society　63　(3)　766-767　2013/08

DOI： 10.3938/jkps.63.766 　

ISSN： 0374-4884 1976-8524
Pressure effects on rattling and superconductivity in the einstein solids Peer-reviewed

Yoichi Ikeda, Yasuhiro Kawasaki, Takafumi Shinohara, Shingo Araki, Tatsuo C. Kobayashi, Atsushi Onosaka, Yoshihiko Okamoto, Jun-Ichi Yamaura, Zenji Hiroi

Journal of the Physical Society of Japan　82　(6)　063707　2013/06

DOI： 10.7566/JPSJ.82.063707 　

ISSN： 0031-9015 1347-4073

eISSN： 1347-4073
Observation of an Unusual Magnetic Anomaly in the Superconducting Mixed State of Heavy-Fermion Compound UBe13 by Precise dc Magnetization Measurements Peer-reviewed

Yusei Shimizu, Yoshinori Haga, Yoichi Ikeda, Tatsuya Yanagisawa, Hiroshi Amitsuka

PHYSICAL REVIEW LETTERS　109　(21)　217001　2012/11

DOI： 10.1103/PhysRevLett.109.217001 　

ISSN： 0031-9007
A Study of Ni-Substitution Effects on Heavy-Fermion CeCu2Si2 - Similarities between Ni Substitution and High-Pressure Effects - Peer-reviewed

Yoichi Ikeda, Shingo Araki, Tatsuo C. Kobayashi, Yusei Shimizu, Tatsuya Yanagisawa, Hiroshi Amitsuka

J. Phys. Soc. Jpn.　81　(8)　083701　2012/06/25

DOI： 10.1143/JPSJ.81.083701 　

More details Close

The effects of Ni substitution on Ce(Cu1-xNix)2Si2 have been studied by specific heat and electrical resistivity measurements. The specific heat measurement has revealed that the enhanced quantum fluctuations around an antiferromagnetic quantum critical point are markedly suppressed by Ni substitution, and that the Fermi liquid state recovers in the Nirich region (x > 0.12). The characteristic T-linear dependence of the resistivity has been observed at approximately x ~ 0.10 together with a sign of superconductivity. The variation of n in the form of rho - rho0 = aT^n against Tmax^1, at which the resistivity peaks, coincides with the case of high-pressure experiments on pure CeCu2Si2. The anomalous T-linear behavior appears to occur in the crossover region from the Kondo regime to the valence fluctuation regime rather than in the conventional antiferromagnetic quantum critical region.
Hall effect in single crystal CeCu2Si2 under high pressure Peer-reviewed

S. Araki, Y. Shiroyama, T. Shinohara, Y. Ito, Y. Ikeda, T. C. Kobayashi, S. Seiro, C. Geibel, F. Steglich

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011)　391　012005　2012

DOI： 10.1088/1742-6596/391/1/012005 　

ISSN： 1742-6588
Cu-NQR of CeCu2Si2 under high pressure Peer-reviewed

K. Fujiwara, M. Iwata, Y. Okazaki, Y. Ikeda, S. Araki, T. C. Kobayashi, K. Murata, C. Geibel, F. Steflich

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011)　391　012012　2012

DOI： 10.1088/1742-6596/391/1/012012 　

ISSN： 1742-6588
Maki Parameter and Upper Critical Field of the Heavy-Fermion Superconductor UBe13 Peer-reviewed

Yusei Shimizu, Yoichi Ikeda, Takumi Wakabayashi, Yoshinori Haga, Kenichi Tenya, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(9)　093701　2011/09

DOI： 10.1143/JPSJ.80.093701 　

ISSN： 0031-9015
Hall effect in CeCu2Si2 under pressure Peer-reviewed

Shingo Araki, Yuki Shiroyama, Yoichi Ikeda, Tatsuo C. Kobayashi, Silvia Seiro, Christoph Geibel, Frank Steglich

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(A)　SA061　2011/07

DOI： 10.1143/JPSJS.80SA.SA061 　

ISSN： 0031-9015
Heat Capacity and ac-Susceptibility Measurements of SmOs4Sb12 under High Pressure Peer-reviewed

Tatsuo C. Kobayashi, Kazuki Miyazawa, Keisuke Tabira, Yoichi Ikeda, Shingo Araki, Hisashi Kotegawa, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(A)　SA034　2011/07

DOI： 10.1143/JPSJS.80SA.SA034 　

ISSN： 0031-9015
Specific Heat and Magnetization Studies of the Superconducting Mixed State of UBe13 Peer-reviewed

Yusei Shimizu, Yoichi Ikeda, Takumi Wakabayashi, Kenichi Tenya, Yoshinori Haga, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(A)　SA100　2011/07

DOI： 10.1143/JPSJS.80SA.SA100 　

ISSN： 0031-9015
Magnetic-Field-Independent Ultrasonic Dispersions in the Magnetically Robust Heavy Fermion System SmOs4Sb12 Peer-reviewed

Yanagisawa, Tatsuya, Ikeda, Yoichi, Saito, Hitoshi, Hidaka, Hiroyuki, Amitsuka, Hiroshi, Araki, Koji, Akatsu, Mitsuhiro, Nemoto, Yuichi, Goto, Terutaka, Ho, Pei-Chun, Baumbach, Ryan E., Maple, M. Brian

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　80　(4)　043601　2011/04

DOI： 10.1143/JPSJ.80.043601 　

ISSN： 0031-9015
Magnetization in the Superconducting Mixed State of the Heavy-Fermion Compound UBe13 Peer-reviewed

Yusei Shimizu, Yoichi Ikeda, Takumi Wakabayashi, Kenichi Tenya, Yoshinori Haga, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka

INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010)　273　012084　2011

DOI： 10.1088/1742-6596/273/1/012084 　

ISSN： 1742-6588
Elastic constants of U(Ru1−xRhx)2Si2 Peer-reviewed

T Yanagisawa, H Saito, T Mayama, Y Ikeda, H Hidaka, M Yokoyama, H Amitsuka

Journal of Physics: Conference Series　200　(1)　012236-012236　2010/02
Publisher: {IOP} Publishing
DOI： 10.1088/1742-6596/200/1/012236 　

ISSN： 1742-6596
Magnetic-field dependence of antiferromagnetic structure in CeRh(1-x)Co(x)In(5) Peer-reviewed

M. Yokoyama, Y. Ikeda, I. Kawasaki, D. Nishikawa, K. Tenya, K. Kuwahara, H. Amitsuka

INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　012239　2010

DOI： 10.1088/1742-6596/200/1/012239 　

ISSN： 1742-6588

eISSN： 1742-6596
Search for hidden order parameter of URu<inf>2</inf>Si<inf>2</inf> by neutron-scattering experiment under uniaxial stress Peer-reviewed

Yoichi Ikeda, Makoto Yokoyama, Daichi Nishikawa, Hiroyuki Hidaka, Tatsuya Yanagisawa, Kenichi Tenya, Shuzo Kawarazaki, Taku J. Sato, Hideki Yoshizawa, Hiroshi Amitsuka

Journal of Physics: Conference Series　200　(SECTION 1)　012065　2010

DOI： 10.1088/1742-6596/200/1/012065 　

ISSN： 1742-6588

eISSN： 1742-6596
Resonant X-ray Scattering Study of Hidden Order in URu2Si2 using a Low-Stress Single Crystal Peer-reviewed

H. Amitsuka, T. Inami, M. Yokoyama, S. Takayama, Y. Ikeda, I. Kawasaki, Y. Homma, H. Hidaka, T. Yanagisawa

INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　012007　2010

DOI： 10.1088/1742-6596/200/1/012007 　

ISSN： 1742-6588
Elastic constants of U(Ru1-xRhx)(2)Si-2 Peer-reviewed

T. Yanagisawa, H. Saito, T. Mayama, Y. Ikeda, H. Hidaka, M. Yokoyama, H. Amitsuka

INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)　200　012236　2010

DOI： 10.1088/1742-6596/200/1/012236 　

ISSN： 1742-6588
Specific heat of EuIn2P2 at high magnetic fields Peer-reviewed

Hiroyuki Hidaka, Yoichi Ikeda, Ikuto Kawasaki, Tatsuya Yanagisawa, Hiroshi Amitsuka

PHYSICA B-CONDENSED MATTER　404　(19)　3005-3007　2009/10

DOI： 10.1016/j.physb.2009.07.027 　

ISSN： 0921-4526
Transport properties accompanied by collapse of antiferromagnetism of Eu(Pt1-xNix)(2)Si-2 Peer-reviewed

A. Mitsuda, Y. Ikeda, N. Ietaka, S. Fukuda, Y. Isikawa

PHYSICA B-CONDENSED MATTER　403　(5-9)　786-788　2008/04

DOI： 10.1016/j.physb.2007.10.031 　

ISSN： 0921-4526
Collapse of antiferromagnetism induced by Ni-substitution in Eu(Pt1-x Ni-x)(2)Si-2 Peer-reviewed

A. Mitsuda, Y. Ikeda, N. Ietaka, S. Fukuda, Y. Isikawa

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　319-321　2007/03

DOI： 10.1016/j.jmmm.2006.10.015 　

ISSN： 0304-8853
Transport properties under high pressure of antiferromagnet EuPt2Si2 with unstable Eu valence Peer-reviewed

Y. Ikeda, A. Mitsuda, N. Ietaka, T. Mizushima, Y. Isikawa, T. Kuwai

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS　310　(2)　E62-E64　2007/03

DOI： 10.1016/j.jmmm.2006.10.211 　

ISSN： 0304-8853

Show all ︎Show first 5

Misc. 87

Antiferromagnetic Order in the Fe-Substituted Bi-2201 Cuprate in the Non-Superconducting Heavily Overdoped Regime

小宮山陽太, 小宮山陽太, 池田陽一, 谷口貴紀, 松田雅昌, 益田隆嗣, 桑原英樹, 黒江晴彦, 川股隆行, 小池洋二, 渡邊功雄, 藤田全基, 足立匡

日本物理学会講演概要集(CD-ROM)　78　(2)　2023

ISSN： 2189-079X
Introductory Note of HERMES, AKANE and TOPAN

31　(1)　28-30　2021/02
Publisher: 「波紋」編集委員会
ISSN： 1349-046X
重い電子系化合物Yb(Co_1-xIr_x)₂Zn₂₀の物性

瑞慶覧長星, 佐藤信, 高村治希, 小林理気, 阿曽尚文, 植田大地, 池田陽一, 吉田雅洋, 吉澤英樹, 松林和幸, 郷地順, 上床美也

日本物理学会講演概要集(CD-ROM)　73　(1)　2018

ISSN： 2189-079X
空間反転対称性の破れたCePdSi₃の磁気構造 2

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉澤英樹, 中尾朗子, 茂吉武人, LIU Yaohua

日本物理学会講演概要集(CD-ROM)　73　(1)　2018

ISSN： 2189-079X
空間反転対称性の破れたCePdSi₃の磁気構造

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉澤英樹, 中尾朗子, 茂吉武人

日本物理学会講演概要集(CD-ROM)　72　(2)　2017

ISSN： 2189-079X
21pBL-13 Superconductivity near antiferromagnetic quantum critical point in CeNiGe_3

Kitagawa S., Araki S., Kobayashi T. C., Ikeda Y., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　71　2294-2294　2016
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.71.1.0_2294 　

ISSN： 2189-079X
UBe13を含むアクチノイド重い電子系化合物における非従来型超伝導及び非フェルミ液体的性質

清水悠晴, 青木大, 本多史憲, 本間佳哉, 李徳新, 仲村愛, 池田陽一, 望月健生, 金道浩一

東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)　33　110‐111　2016
7pBK-2 Superconductivity and magnetism in Zn-doped heavy-fermion CeCoIn_5

Yokoyama M., Fujimura K., Kawasaki I., Tenya K., Kono Y., Sakakibara T., Ikeda Y., Yoshizawa H.

Meeting abstracts of the Physical Society of Japan　69　(2)　343-343　2014/08/22
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
9aBJ-8 Ferromagnetic ordering on CePd_2P_2

Ikeda Yoichi, Yoshizawa Hideki, Yokoo Tetsuya, Ito Shinichi

Meeting abstracts of the Physical Society of Japan　69　(2)　403-403　2014/08/22
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
8aPS-49 Pressure-magnetic field phase diagram of heavy fermion antiferromagnet CeNiGe_3

Kitagawa S., Fujiwara Y., Kawashima G., Ikeda Y., Araki S., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　69　(2)　368-368　2014/08/22
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
30aBE-7 Hall effect in single-crystal CeCu_2Si_2 under high pressure

Kobayashi T. C., Araki S., Nishiumi N., Onji T., Ikeda Y., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　69　(1)　663-663　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aPS-107 Investigation of long range order in Tb_<2+x>Ti_<2-x>O_<7+y>

Taniguchi T., Wakita M., Higashinaka R., Goto K., Takatsu H., Kadowaki H., Ikeda Y., Yoshizawa H., Lynn J. W., Ollivier J., Fak B.

Meeting abstracts of the Physical Society of Japan　69　(1)　500-500　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aPS-79 Charge Density Wave in EuAl_4

Araki S., Ikeda Y., Kobayashi T. C., Nakamura A., Hiranaka Y., Hedo M., Nakama T., Onuki Y.

Meeting abstracts of the Physical Society of Japan　69　(1)　611-611　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aPS-29 Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe_3

Tomijima Takeshi, Ikeda Yoichi, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　69　(1)　600-600　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aPS-27 Physical properties of rare-earth phosphides REPd_2P_2 with ThCr_2Si_2-type structure

Ikeda Yoichi, Yoshizawa Hideki

Meeting abstracts of the Physical Society of Japan　69　(1)　599-599　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Ce122系超伝導体におけるCe価数の圧力・組成依存性

山岡人志, 池田陽一, JARRIGE Ignace, 辻井直人, 舌古裕美子, 山本義哉, 水木純一郎, LIN Jung-Fu, 平岡望, 石井啓文, TSUEI Ku-Ding, 小林達夫, 本多史憲, 大貫敦睦

日本物理学会講演概要集　69　(1)　2014

ISSN： 1342-8349
Cu-NQR Study of Ce Valence state in Ce(Cu_<1-x>Ni_x)_2Si_2

Shirai T., Fujiwara K., Motoyama G., Miyoshi K., Ikeda Y., Kobayashi C.T.

Meeting abstracts of the Physical Society of Japan　68　(2)　593-593　2013/08/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Hall effect in single-crystal CeCu_2Si_2 under high pressure

Araki S., Nishiumi N., Onji T., Ikeda Y., Kobayashi C.T., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　68　(2)　592-592　2013/08/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Pressure and x dependence of Ce valence for Ce((Ru_<1-x>Fe_x)_2Al_<10> and Ce(Ru_<1-x>Rh_x)_2Al_<10> studied by resonant inelastic x-ray scattering

Zekko Y., Yamamoto Y., Kawase S., Yamaoka H., Ikeda Y., Strigari Fabio, Severign Andrea, Tajima F., Nishioka T., Lin Jung-Fu., Hiraoka N., Ishii H., Tsuei Ku-Ding, Mizuki J.

Meeting abstracts of the Physical Society of Japan　68　(2)　446-446　2013/08/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29aXB-6 Coexistence and Competition of Magnetism and Superconductivity on CeNiGe_3.

Tomijima Takeshi, Ikeda Yoichi, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　68　(1)　686-686　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29aXY-3 Various phases and the symmetry under high-pressure on the pyrochlore oxide Cd_2Re_2O_7

Yamaura J., Hiroi Z., Takeda K., Nakayama T., Ikeda Y., Kuwana K., Kobayashi T., Hirao N., Ohishi Y.

Meeting abstracts of the Physical Society of Japan　68　(1)　696-696　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aPS-33 Synthesis and Physical Properties of a New Ce-based Ferromagnet CePd_2P_2

Konishi Sunao, Ikeda Yoichi, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　68　(1)　617-617　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aPS-16 Hall Effect under Pressurein Pressure Induce Superconductor CeIrSi_3 without Centrosymmetric

Nishiumi N., Araki S., Ikeda Y., Kobayasi T., Miura Y., Settai R., Onuki Y.

Meeting abstracts of the Physical Society of Japan　68　(1)　613-613　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29pXB-5 Metamagnetic Transition under pressure in U_3P_4

Araki S., Hayashida M., Nishiumi N., Manabe H., Ikeda Y., Kobayashi T. C., Murata K., Wisniewski P., Inada Y., Aoki D., Onuki Y., Yamamoto E., Haga Y.

Meeting abstracts of the Physical Society of Japan　68　(1)　719-719　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aPS-83 Pressure-Temperature Phase Diagram of an Antiferromagnet EuPt_2Si_2

Ikeda Y., Nose K., Mitsuda A., Ietaka N., Mizushima T., Kuwai T., Isikawa Y., Araki S., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　68　(1)　629-629　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29aXB-2 Cu-Ni Substitution Effects on High-Pressure Resistive Anomalies of CeCu_2Si_2

Ito Y., Ikeda Y., Araki S., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　68　(1)　685-685　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29aXB-3 NQR Study of CeCu_2Si_2 under High Pressure

Iwata M., Fujiwara K., Miyoshi K., Ikeda Y., Araki S., Kobayashi T. C., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　68　(1)　685-685　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
29aXB-4 Cu-NQR Study of Ce(Cu_<1-x>Ni_x)_2Si_2

Shirai T., Fujiwara K., Ikeda Y., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　68　(1)　686-686　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
19aFF-10 Anomalous Fermi Liquid Behavior in the Ni Substituted CeCu_2Si_2

Ikeda Yoichi, Ito Yuzo, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　67　(2)　473-473　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
19aFF-12 Hall effect in single-crystal CeCu_2Si_2 under high pressure

Araki S., Nishiumi N., Hayashida M., Shinohara T., Ito Y., Ikeda Y., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　67　(2)　473-473　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
19aFF-9 Nuclear Magnetic Relaxation of CeCu_2Si_2 in a Critical Pressure Region

Iwata M., Fujiwara K., Miyoshi K., Ikeda Y., Araki S., Kobayashi T. C., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　67　(2)　472-472　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
19aFF-4 Single Crystal Growth and Electrical Resistivity Measurements under High Pressure of CeNiGe_3

Tomijima Takeshi, Ikeda Yoichi, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　67　(2)　471-471　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
19aFF-11 Electrical Resistivity of Heavy Fermion Superconductor Ce(Cu_<1-x>Ni_x)_2Si_2 under High Pressure

Ito Yuzo, Ikeda Yoichi, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　67　(2)　473-473　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
21pFE-2 Pressure Effects on Rattling and Superconductivity of the Einstein Solids A_xV_2Al_<20>(A=Ga_<0.2>,Al_<0.3>)

Shinohara T., Kawasaki Y., Ikeda Y., Araki S., Kobayashi T. C., Onosaka A., Okamoto Y., Hiroi Z.

Meeting abstracts of the Physical Society of Japan　67　(2)　601-601　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
21pFH-4 Hall effect under high pressure in U_3P_4

Hayashida M., Araki S., Nishiumi N., Manabe H., Ikeda Y., Kobayashi T. C., Murata K., Wisniewski P., Aoki D., Onuki Y., Yamamoto E., Haga Y.

Meeting abstracts of the Physical Society of Japan　67　(2)　604-604　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
20aPSA-21 Cu-NMR Study of Single Crystal CeCu_2Si_2 under pressure

Shirai T., Fujiwara K., Miyoshi K., Ikeda Y., Araki S., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　67　(2)　511-511　2012/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25pPSB-44 Correlations between Einstein Temperatures and Superconducting Transition Temperatures on the Einstein Solids A_xV_2Al_<20> (A=Ga, Al, Y)

Kawasaki Y., Shinohara T., Ikeda Y., Araki S., Kobayashi T. C., Onosaka A., Okamoto Y., Hiroi Z.

Meeting abstracts of the Physical Society of Japan　67　(1)　655-655　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25aYB-9 Hall effect in single-crystal CeCu_2Si_2 under high pressure

Araki S., Nishiumi N., Hayashida M., Shinohara T., Shiroyama Y., Ikeda Y., Kobayashi T.C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　67　(1)　587-587　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25aYB-7 Pressure dependence of Cu-NQR frequency in CeCu_2Si_2 -2

Iwata M., Okazaki Y., Fujiwara K., Miyoshi K., Takeuchi J., Ikeda Y., Araki S., Kobayashi C., Harima H., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　67　(1)　587-587　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25aYB-8 Similar Effects between the Ni-Substitution and the Application of Hydrostatic Pressure on the Heavy-Fermion Superconductor CeCu_2Si_2

Ikeda Y., Ito Y., Araki S., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　67　(1)　587-587　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
24pPSB-42 Electrical Resistivity of Ce(Cu_<1-x>Ni_x)_2Si_2 under High Pressure

Ito Y., Ikeda Y., Araki S., Kobayashi T.C.

Meeting abstracts of the Physical Society of Japan　67　(1)　573-573　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
U₃P₄の高圧下ホール効果

林田みなみ, 荒木新吾, 真鍋博紀, 池田陽一, 小林達生, 稲田佳彦, 村田惠三, WISNIEWSKI P., 青木大, 大貫惇睦, 大貫惇睦, 山本悦嗣, 芳賀芳範, 藤原賢二

日本物理学会講演概要集　67　(1)　2012

ISSN： 1342-8349
22aGC-2 Ni Substitution Effects on Heavy-Electron Superconductor CeCu_2Si_2

Ikeda Y., Ito Y., Araki S., Kobayashi T. C.

Meeting abstracts of the Physical Society of Japan　66　(2)　492-492　2011/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
22aGC-1 Hall effect in single-crystal CeCu_2Si_2 under high pressure

Shinohara T., Shiroyama Y., Araki S., Ikeda Y., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　66　(2)　492-492　2011/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
22aPS-88 Electrical Resistivity Measurement of Superconducting Einstein Solid A_xV_2Al_<20>(A=Al,Ga) under High Pressure

Kawasaki Y., Ikeda Y., Araki S., Kobayashi T. C., Onosaka A., Okamoto Y., Hiroi Z.

Meeting abstracts of the Physical Society of Japan　66　(2)　529-529　2011/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
23aPS-24 Pressure dependence of Cu-NQR frequency in CeCu_2Si_2

Iwata M., Fujiwara K., Miyoshi K., Takeuchi J., Ikeda Y., Araki S., Kobayashi T. C., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　66　(2)　582-582　2011/08/24
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
重い電子系超伝導体UBe₁₃における異常な磁気特性

清水悠晴, 池田陽一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会講演概要集　66　(2)　635　2011/08/24

ISSN： 1342-8349
24aGC-7 Anomalous Magnetic Properties in the Superconducting Mixed State of the Heavy-Fermion Superconductor UBe_<13>

Shimizu Y, Ikeda Y, Haga Y, Hidaka H, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　66　(2)　635-635　2011/08/24
Publisher: The Physical Society of Japan (JPS)
DOI： 10.1143/JPSJ.80.093701 　

ISSN： 1342-8349
28aEH-9 Hall effect under pressure on single-crystal CeCu_2Si_2-II

Shiroyama Y., Araki S., Ikeda Y., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　66　(1)　673-673　2011/03/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aEH-8 Electrical Resistivity of Single Crystalline CeCu_2Si_2 under High Pressure

Ito Y., Ikeda Y., Araki S., Shiroyama Y., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　66　(1)　673-673　2011/03/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25aPS-127 Thermal expansion of CeCu_2Si_2 under high pressure

Hayashida M., Araki S., Ikeda Y., Kobayashi T.C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　66　(1)　543-543　2011/03/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
重い電子系超伝導体UBe₁₃におけるMakiパラメーター II

清水悠晴, 池田陽一, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会講演概要集　66　(1)　518　2011/03/03

ISSN： 1342-8349
25aEC-5 Maki Parameter of the heavy-Fermion Superconductor UBe_<13> II

Shimizu Y, Ikeda Y, Tenya K, Haga Y, Hidaka H, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　66　(1)　518-518　2011/03/03
Publisher: The Physical Society of Japan (JPS)
DOI： 10.1143/JPSJ.80.093701 　

ISSN： 1342-8349
Hall effect in CeCu2Si2 under pressure (Proceedings of the International Conference on Heavy Electrons 2010 (ICHE2010))

Journal of the Physical Society of Japan　80　SA061-1〜3　2011
Publisher: Physical Society of Japan
ISSN： 0031-9015
24aWG-12 Hall effect under pressure on single-crystal CeCu_2Si_2

Shiroyama Y., Ikeda Y., Araki S., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　65　(2)　545-545　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
23pPSB-15 AC heat capacity measurement in SmOs_4Sb_<12> under high pressure

Kawasaki K., Miyazawa K., Araki S., Ikeda Y., Kobayashi T. C., Kotegawa H., Sugawara H., Kikuchi D., Sato H.

Meeting abstracts of the Physical Society of Japan　65　(2)　531-531　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
23pPSB-49 Electrical resistivity and thermal expansion of single-crystalline CeCu_2Si_2 under pressure

Araki S., Ikeda Y., Shiroyama Y., Ito Y., Hayashida M., Kobayashi T. C., Seiro S., Geibel C., Steglich F.

Meeting abstracts of the Physical Society of Japan　65　(2)　539-539　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
23pPSB-43 Pressure and Co-substitution Effects of the Valence Transition in Ce(Ni,Co)Sn System

Ikeda Yoichi, Ito Yuzo, Araki Shingo, Kobayashi Tatsuo C.

Meeting abstracts of the Physical Society of Japan　65　(2)　537-537　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
重い電子系超伝導体UBe₁₃におけるGinzburg‐Landauパラメーター

清水悠晴, 池田陽一, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会講演概要集　65　(2)　605　2010/08/18

ISSN： 1342-8349
25pWJ-7 Elastic response of heavy fermion compound U(Ru_<1-x>Rh_x)_2Si_2

Saito H, Yanagisawa T, Mayama T, Ikeda Y, Hidaka H, Yokoyama M, Amitsuka H

Meeting abstracts of the Physical Society of Japan　65　(2)　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25pWJ-15 Ginzburg-Landau Parameter of the Heavy-Fermion Superconductor UBe_<13>

Shimizu T, Ikeda Y, Tenya K, Haga Y, Hidaka H, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　65　(2)　605-605　2010/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
強相関5f電子系化合物における量子異常の研究と新規物性の探索

網塚浩, 柳澤達也, 日高宏之, 池田陽一, 清水悠晴, 西川大地, 田中淳, 真山太一, 横山淳, 芳賀芳範, 本間佳哉

東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)　2009　ROMBUNNO.VI.6　2010/07
重い電子系超伝導体UBe₁₃における基礎物性測定

清水悠晴, 池田陽一, 若林琢巳, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会講演概要集　65　(1)　631　2010/03/01

ISSN： 1342-8349
21pGF-1 Magnetization Measurements of URu_2Si_2 under High Pressure II

Nishikawa D, Ikeda Y, Shimizu Y, Hidaka H, Yanagisawa T, Yokoyama M, Amitsuka H

Meeting abstracts of the Physical Society of Japan　65　(1)　2010/03/01
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
21aPS-16 Ultrasonic measurement of heavy fermion compound U(Ru_<1-x>Rh_x)Si_2

Saito H, Yanagisawa T, Mayama T, Ikeda Y, Hidaka H, Yokoyama M, Amitsuka H

Meeting abstracts of the Physical Society of Japan　65　(1)　605-605　2010/03/01
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
21pGF-6 Thermodynamic Properties of the Heavy-Fermion Superconductor UBe_<13>

Shimizu Y, Ikeda Y, Wakabayashi T, Tenya K, Haga Y, Hidaka H, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　65　(1)　631-631　2010/03/01
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Pr_1-xNd_xOs₄Sb₁₂におけるラットリングの超音波測定

柳澤達也, 齋藤旬, 真山太一, 池田陽一, 日高宏之, 網塚浩, 根本祐一, 後藤輝孝, 武田直也, HO P.‐C, MAPLE M. B

日本物理学会講演概要集　64　(2)　475　2009/08/18

ISSN： 1342-8349
重い電子系超伝導体UBe₁₃における超伝導熱平衡磁化測定

清水悠晴, 池田陽一, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会講演概要集　64　(2)　553　2009/08/18

ISSN： 1342-8349
25pRG-10 Pressure Effect on EuIn_2P_2

Hidaka H, Tanaka A, Ikeda Y, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(2)　449-449　2009/08/18
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
25pTJ-6 Specific Heat Measurement of URu_2Si_2 under High Pressure II

Ikeda Y, Nishikawa D, Tanaka A, Kurahashi Y, Shimizu Y, Hidaka H, Yanagisawa T, Yokoyama M, Tenya K, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(2)　460-460　2009/08/18
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
25pTJ-7 Development of Measurement Method with NiCrAl Piston Cylinder Cell and Magnetization Measurements of URu_2Si_2 under High Pressure

Nishikawa D, Ikeda Y, Hidaka H, Yanagisawa T, Yokoyama M, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(2)　461-461　2009/08/18
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
26aRL-11 Ultrasonic Measurement of Ratting in Pr_<1-x>Nd_xOs_4Sb_<12>

Yanagisawa T, Saito H, Mayama T, Ikeda Y, Hidaka H, Amitsuka H, Nemoto Y, Goto T, Takeda N, Ho P. -C, Maple M. B

Meeting abstracts of the Physical Society of Japan　64　(2)　475-475　2009/08/18
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
27pTJ-1 Thermal Equilibrium Magnetization Measurement in the Superconducting Mixed State of the Heavy-Fermion Superconductor UBe_<13>

Shimizu Y, Ikeda Y, Tenya K, Haga Y, Hidaka H, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(2)　553-553　2009/08/18
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
27aTD-4 Magnetic Excitations in Hidden Order Phase of U(Ru_<1-x>Rh_x)_2Si_2

Yokoyama M., Nishikawa D., Ikeda Y., Amitsuka H., Tenya K., Kuwahara K., Aso N.

Meeting abstracts of the Physical Society of Japan　64　(1)　525-525　2009/03/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aTD-3 Elastic Neutron Scattering Experiment on URu_2Si_2 under Uniaxial Stress

Ikeda Y, Yokoyama M, Nishikawa D, Hidaka H, Yanagisawa T, Tenya K, Kawarazaki S, Sato T. J, Yoshizawa H, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(1)　2009/03/03
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
27aTD-5 Weak Magnetism of Uranium Compounds Studied by Resonant X-ray Scattering Measurements

Amitsuka H, Takayama S, Ikeda Y, Kawasaki I, Hidaka H, Yanagisawa T, Yokoyama M, Inami T, Haga Y, Homma Y

Meeting abstracts of the Physical Society of Japan　64　(1)　525-525　2009/03/03
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
27aPS-76 Electrical resistivity measurement under high pressure on EuIn_2P_2

Hidaka H, Tanaka A, Ikeda Y, Kawasaki I, Yanagisawa T, Amitsuka H

Meeting abstracts of the Physical Society of Japan　64　(1)　548-548　2009/03/03
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
21aPS-100 Search for the Hidden Order parameter in URu_2Si_2

Takayama S., Ikeda Y., Kawasaki I., Yokoyama M., Inami T., Honma Y., Amitsuka H.

Meeting abstracts of the Physical Society of Japan　63　(2)　516-516　2008/08/25
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
21aPS-50 Specific heat of EuIn_2P_2 at high magnetic fields

Hidaka H., Ikeda Y., Kawasaki I., Yanagisawa T., Amitsuka H.

Meeting abstracts of the Physical Society of Japan　63　(2)　504-504　2008/08/25
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
EuIn₂P₂における磁場中比熱測定

日高宏之, 池田陽一, 川崎郁斗, 柳澤達也, 網塚浩

日本物理学会講演概要集　63　(2)　504　2008/08/25

ISSN： 1342-8349
21aPS-101 Heat Capacity Measurement for URu_2Si_2 Under High Pressure

Ikeda Y, Tanaka A, Takayama S, Ishihara Y, Hidaka H, Yanagisawa T, Yokoyama M, Tenya K, Amitsuka H

Meeting abstracts of the Physical Society of Japan　63　(2)　516-516　2008/08/25
Publisher: 社団法人日本物理学会
ISSN： 1342-8349
21pPSA-10 Systematic Study of Single-Site Electronic Correlation in Dilute Magnetic System La_<1-x>RE_xRu_2Si_2 (RE : Rare-Earth Elements ; x≤0.1)

Morishita A., Oinuma S., Ikeda Y., Yokoyama M., Tenya K., Amitsuka H.

Meeting abstracts of the Physical Society of Japan　62　(2)　562-562　2007/08/21
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
23pPSB-17 The effect of constant volume dilution on Eu site in EuPt_2Si_2

Ikeda Yoichi, Mitsuda Akihiro, Ietaka Nobuyuki, Mizushima Toshio, Isikawa Yosikazu, Kuwai Tomohiko

Meeting abstracts of the Physical Society of Japan　61　(2)　423-423　2006/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27pTC-5 Electrical resistivity under high pressure of antiferromagnet EuPt_2Si_2 with unstable Eu valence

Ikeda Y., Mitsuda A., Ietaka N., Mizushima T., Isikawa Y., Kuwai T.

Meeting abstracts of the Physical Society of Japan　61　(1)　553-553　2006/03/04
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
価数不安定な反強磁性体EuPt2Si2の圧力下電気抵抗

池田陽一, 光田暁弘, 石川義和

富山大学極低温量子科学研究センター低温だより　(17)　35-39　2006/02
Publisher: 富山大学極低温量子科学研究センター
19pPSA-92 Thermoelectric Power of Eu(Pt_<1-x>Ni_x)_2Si_2

Ikeda Y., Mitsuda A., Yamauchi K., Mizushima T., Ishikawa Y.

Meeting abstracts of the Physical Society of Japan　60　(2)　415-415　2005/08/19
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Eu(Pt1-xNix)2Si2の熱電能測定

池田陽一, 光田暁弘, 家高宣幸

富山大学極低温量子科学研究センター低温だより　(16)　21-24　2005/02
Publisher: 富山大学極低温量子科学研究センター

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Evaluation of short-range order parameter of medium-entropy alloys via reverse Monte Carlo modeling

Saiki Futami, Yoichi Ikeda, Hong-Fei Zhao, Masaki Fujita

2024/09/18
Reverse Monte Carlo Modeling of Short-Range Ordering in Medium-Entropy Alloys

Saiki Futami, Yoichi Ikeda, Masaki Fujita

2023/12/06
量子ビームによるミディアムエントロピー合金中の短範囲規則化の探索 Invited

池田陽一

日本金属学会第172回講演大会，公募シンポジウムハイエントロピー合金の材料科学IX （東京大学）　2023/03
中エントロピー合金における短距離秩序の探索 Invited

池田陽一

日本磁気学会第243回研究会ハイエントロピー機能性材料研究の最前線　2023
中性子全散乱法によるミディアムエントロピー合金TrCoNi(Tr = Cr, Mn and Fe)の局所構造解析

池田陽一, 本田孝志, 池田一貴, 大友季哉, 藤田全基

日本金属学会 2021年春期講演大会　2021/03
中性子散乱による層状ニッケル酸化物R2-xSrxNiO4(R = La, Nd)におけるストライプ・チェッカーボード秩序相の研究 Invited

池田陽一, 鈴木將太, 中林拓頌, 吉澤英樹, 横尾哲也, 伊藤晋一

第三回物構研サイエンスフェスタ（第六回MLFシンポジウム、筑波）　2015/03
輸送及び熱測定から見た層状ニッケル酸化物R2-xSrxNiO4(R = La, Nd)におけるストライプ・チェッカーボード秩序相のNi電子状態の違い Invited

池田陽一, 鈴木將太, 中林拓頌, 吉澤英樹, 横尾哲也, 伊藤晋一

日本中性子科学会第14会年会（札幌）
Pressure effects on Rattling and Superconductivity in the Einstein Solids Invited

Y. Ikeda, T. Shinohara, Y. Kawasaki, S. Araki, T. C. Kobayashi, A. Onosaka, Y. Okamoto, J. Yamaura, Z. Hiroi

2013/09/02
Inelastic X-ray and neutron scattering of MnCoNi

東京理科大学，3/13-15, (2024).　2024/03
Yb希薄系(Lu,Yb)Rh2Zn20の単結晶によるパルス強磁場磁化測定

北澤崇文, 池田陽一, 松尾晶, 清水悠晴, 川又雅広, 徳永陽, 芳賀芳範, Petr Opletal, 酒井宏典, 常盤欣文, 山本悦嗣, 神戸振作, 金道浩一, 藤田全基

日本物理学会 2024年春季大会　2024/03
Local Structure Analysis of Iron;Manganese-Based Elinvar Alloys via Neutron Total Scattering

Y. Umemoto, Y. Ikeda, T. Honda, J. Schneeloch, J. C. Neuefeind, D. Louca, M. Fujita

Summit of Materials Science 2023, and GIMRT User Meeting 2023
Time-Temperature Dependent Short- and Long-Range Structural Transformation in Medium-Entropy Alloys

Saiki Futami, Yoichi Ikeda, Yoshihiko Umemoto, Masaki Fujita
ウラン系化合物Lu1-xUxRh2Zn20における縮重度の大きな近藤効果の検証

北澤崇文, 徳永陽, 芳賀芳範, 清水悠晴, Petr Opletal, 酒井宏典, 常盤欣文, 山本悦嗣, 神戸振作, 池田陽一, 藤田全基

日本物理学会2023年年次大会　2023/09
Investigation of the Multiorbital Kondo Effect in a 5f-electron Compound (Lu,U)Rh2Zn20

Takafumi Kitazawa, Yo Tokunaga, Yoshinori Haga, Petr Opletal, Hironori Sakai, Yoshifumi Tokiwa, Etsuji Yamamoto, Shinsaku Kambe, Yoichi Ikeda, Masaki Fujita

International Conference on Strongly Correlated Electron Systems　2023/07
鉄マンガン基インバー・エリンバー合金のマルチスケール構造解析 Invited

梅本好日古, 池田陽一, 本田孝志, J. Schneeloch, J. C. Neuefeind, D. Louca, 藤田全基

第 30 回「みちのく磁性談話会」　2023/06/17
Structural investigation on an excitonic insulator candidate (Ta1−xTix)2NiSe5

Saiki Futami, Yoichi Ikeda, Masaki Fujita, Yusuke Hirose, Rikio Settai, Shun Tsuchida

2023/05/30
鉄マンガン基恒弾性合金における弾性率のソフト化異常とマルテンサイト相分率に対する鉄-マンガンおよび鉄-モリブデン置換の影響

梅本好日古, 池田陽一, 林智紀, 市坪哲, 藤田全基

日本金属学会春季大会　2022/03
東北大学中性子散乱分光器6G-TOPANの2021年

池田陽一, 大河原学, 谷口貴紀, 南部雄亮, 岩佐和晃, 藤田全基

第21回日本中性子科学会年会　2021/12/03
Elinvar Characteristics on FeMn-Based Alloys Studied by Electromagnetic Acoustic Resonance Measurement

Y Umemoto, Y Ikeda, T Hayashi, T Ichitsubo, M Fujita

MRM2021　2021/12
鉄マンガン基恒弾性合金におけるフォノンの非線形異常とメゾスコピック構造の関係

梅本好日古, 池田陽一, 大石一城, 河村幸彦, 廣井孝介, 藤田全基

日本中性子科学会年会　2021/12
広域 X線吸収端微細構造解析によるチタン中に添加された遷移金属周りの局所的原子変位の観測

池田陽一, 松村大樹, 辻卓也, 梅本好日古, 橋本勇輝, 北澤崇文, 藤田全基

第141回金研講演会　2021/11
圧力下単結晶中性子回折実験による重い電子系超伝導体CeNiGe3の研究

橋本勇輝, 池田陽一, 北澤崇文, 宗像孝司, 鬼柳亮嗣, 大原高志, 藤田全基

日本物理学会2021年秋季大会　2021/09/21
中性子小角散乱法による鉄マンガン基恒弾性合金におけるメゾスコピック構造の観察

梅本好日古, 池田陽一, 大石一城, 河村幸彦, 廣井孝介, 藤田全基

日本金属学会秋季大会　2021/09
重い電子系超伝導体CeNiGe3に対する圧力下単結晶中性子回折実験

橋本勇輝, 池田陽一, 宗像孝司, 鬼柳亮嗣, 藤田全基

第140回金研講演会　2021/05
量子ビーム実験から観たミディアムエントロピー合金の局所構造

池田陽一, 松村大樹, 辻卓也, 本田孝志, 池田一貴, 大友季哉, 梅本好日古, 藤田全基

第140回金研講演会　2021/05
空間反転対称性の破れたCePdSi3の磁気構造

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉沢英樹, 中尾朗子, 茂吉武人, Yaohua Liu

2017サイエンスフェスタ　2018/03
空間反転対称性の破れたCeTSi3(T=Rh, Ir)の結晶場準位

植田大地, 小吹智広, 吉田雅洋, 池田陽一, 伊藤晋一, 横尾哲也, 吉沢英樹

2017サイエンスフェスタ　2018/03
空間反転対称性の破れたCePdSi3の磁気構造2

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉沢英樹, 中尾朗子, 茂吉武人, Yaohua Liu

日本物理学会春季大会　2018/03
Complex Magnetization Stairs in the Noncentrosymmetric Cerium-based Intermetallic Compounds CePdSi3 and CePtSi3

Yoichi Ikeda, Daichi Ueta, Masahir Yoshida, Hideki Yoshizawa

Kick-off Symposium for World Leading Research Centers - Materials Science and Spintronics　2018/02
Magnetic Structure of a Non-Centrosymmetric CePdSi3

2018/01
空間反転対称性の破れたCePdSi3の磁気構造

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉沢英樹, 中尾朗子, 茂吉武人, Yaohua Liu

日本中性子学会年会　2017/12
中性子非弾性散乱による La2−xSrxCoO4 の磁気励起

吉田雅洋, 植田大地, 池田陽一, 横尾哲也, 伊藤晋一, 吉澤英樹

日本物理学会秋季大会　2017/09
空間反転対称性の破れたCePdSi3の磁気構造

植田大地, 吉田雅洋, 小吹智広, 池田陽一, 吉沢英樹, 中尾朗子, 茂吉武人, Yaohua Liu

日本物理学会秋季大会　2017/09
Magnetic and Thermodynamic Studies on the Charge and Spin Ordering in the Highly Hole-doped La2-xSrxCoO4 International-presentation

吉田雅洋, 植田大地, 池田陽一, 横尾哲也, 伊藤晋一, 吉澤英樹

International Conference on Strongly Correlated Electron Systems　2017/07
Crystalline Electric Field Level Scheme of the Non-Centrosymmetric CePtSi3 International-presentation

International Conference on Strongly Correlated Electron Systems　2017/07
空間反転対称性の破れたCePtSi3の磁気特性

植田大地, 小吹智広, 吉田雅洋, 池田陽一, 伊藤晋一, 横尾哲也, 吉沢英樹

日本物理学会春季大会　2017/03
20pPSB-39 Physical properties in a heavy fermion compound Yb(Co_<1-x>Ni_x)_2Zn_<20> III

Higa Y., Kobayashi R., Aso N., Ikeda Y., Yoshizawa H., Matsubayashi K., Uwatoko Y.

Meeting Abstracts of the Physical Society of Japan　2016
20pPSB-6 Low-temperature properties of heavy-fermion superconductor Ce(Co1_<1-x>Ni_x)In_5

Otaka R., Yokoyama M., Mashiko H., Tenya K., Ikeda Y., Shimizu Y., Kono Y., Yoshizawa H., Sakakibara T.

Meeting Abstracts of the Physical Society of Japan　2016
20pPSB-12 Neutron powder diffraction of the non-centrosymmetric ternary compounds R_5Ru_3Al_2(R=Ce,Pr)

Makino Koya, Okuyama Daisuke, Avdeev Maxim, Ikeda Yoichi, Yoshizawa Hideki, Sato Taku J

Meeting Abstracts of the Physical Society of Japan　2016
21pBL-14 Weak Ferromagnetism and Multiple Metamagnetic Transitions in the Non-Centrosymmetric Tetragonal Compound CePdSi_3

Ueta D., Ikeda Y., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　2016
21pBL-13 Superconductivity near antiferromagnetic quantum critical point in CeNiGe_3

Kitagawa S., Araki S., Kobayashi T. C., Ikeda Y., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　2016
19aPS-30 Weak Ferromagnetic Behavior of the Magnetization in the Rare-Earth Magnetic Alloys Gd_<1-x>La_x and Their Magnetic Phase Diagram

Kurihara M., Yamazaki T., Okuyama D., Ikeda Y., Soda M., Sato T. J., Yoshizawa H., Masuda T., Yaguchi H.

Meeting Abstracts of the Physical Society of Japan　2016
Magnetic phase diagram of highly hole-doped La_2-xSr_xCoO₄

Yoshida Masahiro, Ueta Daichi, Ikeda Yoichi, Yoshizawa Hideki

Meeting Abstracts of the Physical Society of Japan　2016
Magnetic Properties of CeTSi₃(T=Pd, Pt) with a Non-Centrosymmetric Structure

Ueta D., Ikeda Y., Shibata H., Yoshida M., Itoh S., Yokoo T., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　2016
A Study of the Low-Temperature Magnetic Properties of CePdAl₃

Ikeda Yoichi, Shibata Hiroki, Ueta Daichi, Yoshida Masahiro, Yoshizawa Hideki

Meeting Abstracts of the Physical Society of Japan　2016
17aPS-36 Magnetic Properties of Single Crystalline CePdSi_3 with a Non-Centrosymmetric Structure

Ueta D., Ikeda Y., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　2015
17aPS-12 Field-induced non-Fermi liquid state in Zn-doped CeCoIn_5

Otaka R., Yokoyama M., Sakon Y., Tenya K., Ikeda Y., Yoshizawa H., Shimizu Y., Sakakibara T.

Meeting Abstracts of the Physical Society of Japan　2015
17aDA-7 Magnetic Structure Analysis of CeNiGe_3

Ikeda Y., Nakao A., Munakata K., Ohhara T., Ueta D., Yoshizawa H.

Meeting Abstracts of the Physical Society of Japan　2015
17pCD-11 Magnetic properties of the non-centrosymmetric ternary compounds RE_5Ru_3Al_2(RE=Ce,Pr)

Makino Koya, Okuyama Daisuke, Avdeev Maxim, Ikeda Yoichi, Yoshizawa Hideki, Sato Taku J

Meeting Abstracts of the Physical Society of Japan　2015
22aPS-40 Specific heat and resistivity of heavy-fermion superconductor CeCo(In,Zn)_5 under magnetic field

Mashiko H., Otaka R., Fujimura K., Sakon Y., Ikeda Y., Yoshizawa H., Kondo A., Kindo K., Tenya K., Yokoyama M.

Meeting Abstracts of the Physical Society of Japan　2015
24aPS-110 Effect of magnetic field on electrical resistivity for cluster-glass state of Sr_<1-x>La_xRuO_3

Fujimura K., Sakon Y., Kondo A., Kindo K., Ikeda Y., Yoshizawa H., Kawanaka H., Tenya K., Yokoyama M.

Meeting Abstracts of the Physical Society of Japan　2015
21aBB-7 Upper critical field of heavy-fermion superconductor CeCo(In_<1-x>Zn_x)_5

Yokoyama M., Fujimura K., Kawasaki I., Tenya K., Kono Y., Sakakibara T., Ikeda Y., Yoshizawa H., Kondo A., Kindo K.

Meeting Abstracts of the Physical Society of Japan　2015
CeNiGe3の圧力誘起相図

冨嶋武司, 池田陽一, 荒木新吾, 小林達生

日本物理学会年次大会（東海大学）2014年(口頭)．　2014
ThCr2Si2型構造を有するリン系化合物REPd2P2(RE: Rare earth)の物性

池田陽一, 吉澤英樹

日本物理学会年次大会（東海大学）2014年(28aPS-27 ポスター)　2014
CePd2P2の強磁性秩序

池田陽一, 吉澤英樹, 横尾哲也, 伊藤晋一

日本物理学会秋季大会（中部大学）2014年（9aBJ-8 口頭）　2014
Ferromagnetic Transition of An Overlooked Ce-based Compound CePd2P2 with ThCr2Si2-type Structure, SCES2014

Y. Ikeda, H. Yoshizawa

SCES2014, Grenoble, France　2014
CeCu2Si2の高圧下ホール効果

荒木新吾, 西海尚人, 恩地太紀, 池田陽一, 小林達生

日本物理学会秋季大会（徳島大学）2013年(口頭)．　2013
Ni Substitution Effects on High-Pressure Resistive Anomalies of CeCu2Si2

Y. Ikeda, Y. Ito, S. Araki, T. C. Kobayashi

SCES2013, Tokyo (poster).　2013
遍歴強磁性体U3P4の高圧下ホール効果

林田みなみ, 荒木新吾, 真鍋博紀, 池田陽一, 小林達生, 稲田佳彦, 村田恵三, P. Wisniewski, 青木大, 大貫惇睦, 山本悦嗣, 芳賀芳範, 藤原賢二

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
単結晶CeCu2Si2の高圧下NMR測定

藤原賢二, 白井智洋, 三好清貴, 池田陽一, 荒木新吾, 小林達生, S. Seiro, C. Geibel, F. Steglich

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
臨界圧力領域におけるCeCu2Si2の核磁気緩和

岩田真和, 藤原賢二, 三好清貴, 池田陽一, 荒木新吾, 小林達生, C. Geibel, F. Steglich

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
単結晶CeCu2Si2の高圧下Hall効果

荒木新吾, 西海尚人, 林田みなみ, 篠原隆史, 城山裕貴, 池田陽一, 小林達生, S. Seiro, C. Geibel, F. Steglich

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
アインシュタイン固体AxV2Al20（A = Ga, Al）のラットリングと超伝導の圧力効果

篠原隆史, 川嵜靖広, 池田陽一, 荒木新吾, 小林達生, 小野坂篤, 岡本佳比古, 廣井善二

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
圧力誘起超伝導体CeNiGe3の単結晶育成と圧力下電気抵抗測定

冨島武司, 池田陽一, 荒木新吾, 小林達生

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
重い電子超伝導体Ce(Cu1-xNix)2Si2の圧力下電気抵抗測定

伊藤佑壮, 池田陽一, 荒木新吾, 小林達生

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)　2012/09
Ce(Cu1-xNix;Si2における非フェルミ流体異常

池田陽一, 伊藤佑壮, 荒木新吾, 小林達生

日本物理学会秋季大会（横浜国立大学）2012年9月18-21日(口頭)．　2012/09
A Study of Ni-substitution Effects on the Heavy Fermion Superconductor CeCu2Si2

Y. Ikeda, Y. Ito, S. Araki, T. C. Kobayashi

19th International Conference on Magnetism 2012 (Busan, Korea) 2012/07/08-13.　2012/07
超伝導体AxV2Al20(A = Al, Ga, Y)におけるアインシュタイン温度と超伝導転移温度の相関

川嵜靖広, 篠原隆史, 池田陽一, 荒木新吾, 小林達生, 小野坂篤, 岡本佳比古, 廣井善治

日本物理学会年次大会（関西学院大学）2012年3月24-27日（ポスター）　2012/03
Ce(Cu1-xNix)2Si2の高圧力下電気抵抗測定

伊藤佑壮, 池田陽一, 荒木新吾, 小林達生

日本物理学会年次大会（関西学院大学）2012年3月24-27日（ポスター）　2012/03
CeCu2Si2におけるCu核のNQR周波数の圧力依存性-2

岩田真和, 岡崎裕, 藤原賢二, 三好清貴, 竹内潤, 池田陽一, 荒木新吾, 小林達生, 播磨尚朝, C. Geibel, F. Steglich

2012/03
単結晶CeCu2Si2の圧力下Hall効果測定Ⅱ

荒木新吾, 西海尚人, 林田みなみ, 篠原隆史, 城山裕貴, 池田陽一, 小林達生, S. Seiro, C. Geibel, F. Steglich

日本物理学会年次大会（関西学院大学）2012年3月24-27日（口頭）　2012/03
CeCu2Si2におけるNi置換効果と静水圧力効果の類似点

池田陽一, 伊藤佑壮, 荒木新吾, 小林達生

日本物理学会年次大会（関西学院大学）2012年3月24-27日（口頭）．　2012/03
Heat Capacity of SmOs4Sb12 under High Pressure

T. C. Kobayashi, K. Miyazawa, Y. Ikeda, S. Araki, H. Kotegawa, H. Sugawara, D. Kikuchi, H. Sato

From Blue Pigment to Green Energy -Cobalt Mines-Skutterudites-Thermoelectronics- (Skuterud, Norway), Sep. 5th-8th 2011　2011/09
重い電子系超伝導体UBe13における異常な磁気特性

清水悠晴, 池田陽一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会秋季大会（富山大学）2011年9月21-24日（口頭）．　2011/09
CeCu2Si2におけるCu核のNQR周波数の圧力依存性

岩田真和, 藤原賢二, 三好清貴, 竹内潤, 池田陽一, 荒木新吾, 小林達生, C. Geibel, F. Steglich

日本物理学会秋季大会（富山大学）2011年9月21-24日（ポスター）．　2011/09
超伝導体AxV2Al20 (A = Al, Ga) の圧力下電気抵抗測定

川嵜靖広, 篠原隆史, 池田陽一, 荒木新吾, 小林達生, 小野坂篤, 岡本佳比呂, 廣井善二

日本物理学会秋季大会（富山大学）2011年9月21-24日（ポスター）．　2011/09
単結晶CeCu2Si2の圧力下Hall効果測定

篠原隆史, 城山祐貴, 荒木新吾, 池田陽一, 小林達生

日本物理学会秋季大会（富山大学）2011年9月21-24日（口頭）．　2011/09
CeCu2Si2におけるCuサイトのNi置換効果

池田陽一, 伊藤佑壮, 荒木新吾, 小林達生

日本物理学会秋季大会（富山大学）2011年9月21-24日（口頭）．　2011/09
Hall Effect in Single Crystal CeCu2Si2 under High Pressure

S. Araki, Y. Shiroyama, T. Shinohara, Y. Ikeda, T. C. Kobayashi, S. Seiro, C. Geibel, F. Steglich

SCES2011 (Cambridge, UK), 29th Aug.-3rd Sep. 2011　2011/08
単結晶CeCu2Si2の圧力下基礎物性測定

荒木新吾, 池田陽一, 城山祐貴, 伊藤佑壮, 林田みなみ, 小林達生, S. Seiro, C. Geibel, F. Steglich

日本物理学会秋季大会（大阪府立大学）2010年9月23-26日（ポスター）．　2010/09
単結晶CeCu2Si2の高圧下Hall効果

城山祐貴, 池田陽一, 荒木新吾, 小林達生, S. Seiro, C. Geibel, F. Steglich

日本物理学会秋季大会（大阪府立大学）2010年9月23-26日（口頭）　2010/09
重い電子系超伝導体UBe13におけるGinzbrug-Landauパラメーター

清水悠晴, 池田陽一, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会秋季大会（大阪府立大学）2010年9月23-26日　2010/09
重い電子系化合物U(Ru1-xRhx)2Si2の弾性応答

斉藤旬, 柳澤達也, 真山太一, 池田陽一, 日高宏之, 横山淳, 網塚浩

日本物理学会秋季大会（大阪府立大学）2010年9月23-26日（口頭）　2010/09
Ce(Ni,Co)Sn系における価数転移温度の圧力・元素置換効果

池田陽一, 伊藤佑壮, 荒木新吾, 小林達生

日本物理学会秋季大会（大阪府立大学）2010年9月23-26日（ポスター）．　2010/09
URu2Si2の高圧下磁化測定Ⅱ

西川大地, 池田陽一, 清水悠晴, 日高宏之, 柳澤達也, 横山淳, 網塚浩

日本物理学会年次大会（岡山大学）2010年3月20-23日(口頭)　2010/03
重い電子系超伝導体UBe13における基礎物性測定

清水悠晴, 池田陽一, 若林琢巳, 天谷健一, 芳賀芳範, 日高宏之, 柳澤達也, 網塚浩

日本物理学会年次大会（岡山大学）2010年3月20-23日　2010/03
重い電子系化合物URu2Si2のRhドープ系における超音波測定

斉藤旬, 柳澤達也, 真山太一, 池田陽一, 日高宏之, 横山淳, 網塚浩

日本物理学会年次大会（岡山大学）2010年3月20-23日　2010/03
重い電子系超伝導体UBe13における超伝導熱平衡磁化測定

清水悠晴, 池田陽一, 天谷健一, 芳賀芳載, 日高宏之, 柳澤達也, 網塚浩

日本物理学会・2009年秋季大会，(27pTJ-1)，熊本大学，2009年9月25日　2009/09
URu2Si2の圧力下比熱測定Ⅱ

池田陽一, 西川大地, 田中淳, 倉橋洋祐, 清水悠晴, 日高宏之, 柳澤達也, 横山淳, 天谷健一, 網塚浩

日本物理学会・2009年度秋季大会，(25pTJ-6)，熊本大学，2009年9月25日. (口頭)　2009/09
Resonant X-ray Scattering Study of Hidden Order in URu2Si2 using a Low-Stress Single Crystal

H. Amitsuka, T. Inami, M. Yokoyama, S. Takayama, Y. Ikeda, I. Kawasaki, Y. Homma, H. Hidaka, T. Yanagisawa

International Conference on Magnetism，Karlsruhe，Germany，July 26-31，2009　2009/07
Elastic constants of U(Ru1-xRhx)2Si2

T. Yanagisawa, H. Saito, T. Mayama, Y. Ikeda, H. Hidaka, M. Yokoyama, H. Amitsuka

International Conference on Magnetism，Karlsruhe，Germany，July 26-31，2009　2009/07
Magnetic-field dependence of antiferromagnetic structure in Ce(Rh1−xCox)In5

M. Yokoyama, Y. Ikeda, I. Kawasaki, D. Nishikawa, K. Tenya, K. Kuwahara, H. Amitsuka

International Conference on Magnetism，Karlsruhe，Germany，July 26-31，2009．　2009/07
Search for Hidden Order Parameter of URu2Si2 by Neutron Scattering Experiment under Uniaxial Stress

Y. Ikeda, M. Yokoyama, D. Nishikawa, H. Hidaka, T. Yanagisawa, K. Tenya, S. Ka-warazaki, T. J. Sato, H. Yoshizawa, H. Amitsuka

International Conference on Magnetism，Karlsruhe，Germany，July 26-31，2009　2009/07
URu2Si2 における隠れた秩序変数の探索

高山茂樹, 池田陽一, 川崎郁斗, 横山淳, 稲見俊哉, 本間佳哉, 網塚浩

日本物理学会・2008 年度秋季大会，（21aPS-100），岩手大学，2008 年9 月21 日　2008/09
URu2Si2 における一軸応力下弾性中性子散乱実験

池田陽一, 田中淳, 高山茂貴, 石原裕子, 日高宏之, 柳澤達也, 横山淳, 天谷健一, 網塚浩

日本物理学会・2008 年度秋季大会，(21aPS-101)，岩手大学，2008 年9 月21 日　2008/09
Specific heat of EuIn2P2 at high magnetic fields

H. Hidaka, Y. Ikeda, I. Kawasaki, T. Yanagisawa, H. Amitsuka

Strongly correlated electron system (SECS)，Buzios / Rio，Brazil，Aug 17-22，2008．　2008/08
反強磁性体EuPt2Si2 のEu 等体積希釈効果

池田陽一, 光田暁弘, 家高宣幸, 水島俊雄, 石川義和, 桑井智彦

日本物理学会秋季大会，（23pPSB-17），千葉大学，2006 年9 月23 日　2006/09
Collapse of antiferromagnetism induced by Ni-substitution in Eu(Pt1-xNix)2Si2

A. Mitsuda, Y. Ikeda, N. Ietaka, S. Fukuda, Y. Isikawa

International Conference on Magnetism，（PSMo-B-057），Kyoto，Japan，August 20-25，2006　2006/08
Transport properties under high pressure of antiferromagnet EuPt2Si2 with unstable Eu valence

Y. Ikeda, A. Mitsuda, N. Ietaka, T. Mizushima, Y. Isikawa, T. Kuwai

International Conference on Magnetism，（PSMo-C-140），Kyoto，Japan，August 20-25，2006　2006/08
価数不安定な反強磁性体EuPt2Si2 の圧力下電気抵抗

池田陽一, 光田暁弘, 家高宣幸, 水島俊雄, 石川義和, 桑井智彦

日本物理学会・2006 年度年次大会，（27pTC-5），愛媛大学・松山大学，2006 年3 月27 日．　2006/03
価数不安定な反強磁性体EuPt2Si2 の圧力下電気抵抗

池田陽一, 家高宣幸, 光田暁弘, 水島俊雄, 桑井智彦, 石川義和

日本物理学会北陸支部・定例学術講演会，（C-p12），福井大学，2005 年12 月3 日．　2005/12
Eu(Pt1-xNix)2Si2 の熱電能測定

池田陽一, 光田暁弘, 山内清典, 水島俊雄, 石川義和

日本物理学会・2005 年度秋季大会，（19pPSA-92），同志社大学，2005 年9 月19 日　2005/09

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Research Projects 8

Search for high-spec alloys with short-/medium-range networks embedded in a long-range fundamental frame

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2024/04 - 2027/03
広帯域偏極中性子分光法による不規則合金中の断片化されたネットワーク構造の可視化

池田陽一

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 挑戦的研究(萌芽)

Institution: 東北大学

2024/06/28 - 2026/03/31
Pioneering of neutron spin polarization material science

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (S)

Institution: Tohoku University

2021/07/05 - 2026/03/31
Visualization of local chemical structure in high entropy alloys with quantum beams

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Tohoku University

2021/04 - 2023/03
High-pressure neutron diffraction study of heavy-electron antiferromagnetic states

Ikeda Yoichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2019/04 - 2022/03

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The aim of the project is to develop a high-pressure apparatus for neutron diffraction experiments, which is available to keep a high-pressure condition of 4-5 GPa, and to get an additional insight into magnetic phases of CeNiGe3 under high pressure. We have succeeded in observing magnetic Bragg reflections with our high-pressure apparatus under high pressure, though the applied pressure is lower than the target pressure (4-5 GPa). In addition, we found that the incommensurate magnetic propagation wave vector of the low-pressure antiferromagnetic phase possibly shifts to a commensurate point, indicating a possible incommensurate-to-commensurate magnetic transition under high pressure. Further upgrade of our high-pressure apparatus is under consideration.
Establishment of neutron spin prism method and study of electron multi-dynamics of superconductors

FUJITA Masaki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2016/04/01 - 2021/03/31

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In order to elucidate the nature of spin fluctuations of cuprate superconductors, we conducted a study by the inelastic neutron scattering measurements. Utilizing high-resolution experimental techniques, we successfully found the evidence of two types of spin fluctuations in the superconducting phase of cuprate, and clarified a strong coupling between particular spin fluctuations and optical phonons. We also developed a device capable of spin polarization of high-energy neutrons and introduced it into the spectrometer as J-PARC. Furthermore, we were able to examine the feasibility of a new experimental method called the neutron spin prism method, which can be achieved by combining the polarized device and a superconducting magnet.
中性子回折によるハイエントロピー合金の局所構造解析

池田陽一

Offer Organization: 日本学術振興会

System: 科学研究費助成事業新学術領域研究(研究領域提案型)

Category: 新学術領域研究(研究領域提案型)

Institution: 東北大学

2019/04 - 2021/03

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構成元素数を３つに減らした，ミディアムエントロピー合金T-CoNi（T=クロムCr, マンガンMn, 鉄Fe）に着目して研究を進めた．理論的には，この３つの系の配置エントロピーは同程度であるが，生成エンタルピーがクロム系では負，鉄系では正，マンガン系では略ゼロとなっており定性的な違いが指摘されている．即ち，クロム系では異種元素が，鉄系では同種元素が最近接になりやすい傾向があり，一方，マンガン系はランダムになり易い傾向を持つことが予想される．本年度は，理論的に予想されている生成エンタルピーの定性的な違い（Cr系では負，Fe系では正，Mn系では略ゼロ）が，局所構造にどのように反映されているのかを実験的に明らかにするために，SPring-8 BL14B1にてX線吸収端微細構造解析（EXAFS）を行った．予備的ではあるが局所構造解析を行ったところ，３つの物質の間で，平均格子定数の違いでは説明ができない変化がEXAFSスペクトルに見られ，何らかの局所構造の違いを示唆する結果が得られた．しかしながら，本年度の実験から，実験中の系統誤差が不明瞭なため定量的な議論が難しいこともわかってきた．より定量的な議論をするために，次年度は試料形状をフォイル状にするなどの工夫を行い，系統誤差を減らした実験を進める予定である．また中性子全散乱測定による局所構造解析を行うために，J-PARC MLFへのビームタイム申請を行い，2020A期にビームタイムを獲得した．2020年度は中性子実験による局所構造解析を進めることに加えて，本年度行ったEXAFS実験をより詳細に行う予定である．
Neutron diffraction study of magnetic phases on cerium-based heavy fermion superconductors

IKEDA YOICHI

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

Category: Grant-in-Aid for Young Scientists (B)

Institution: Tohoku University

2016/04 - 2018/03

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In order to reveal pressure-induced magnetic phases on the cerium-based heavy electron superconductor CeNiGe3, we developed a small pressure cell with a wide detectable reflection angles for neutron diffraction experiments. For higher-pressure experiments above 4 GPa, further improvement on the gasket and sealing parts is indispensable. High-pressure neutron experiments were late because of a delay on the development of high pressure cell and a trouble on the cryostat in the neutron facility. Under these circumstances, we studied an alternate research subject of the noncentrosymmetric cerium-based intermetallic compounds CePdSi3. For CePdSi3, we found multiple magnetization steps, complex magnetic phase diagrams, and a possibility that an incommensurate magnetic ground state is realized.

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Teaching Experience 4

metal physics for master's course　Tohoku University
(fundamentals for research)　Tohoku University
(fundamentals for research)　Tohoku University Undergraduate (liberal arts)
metal physics for master's course　Tohoku University

Social Activities 1

富山大学理学部キャリアデザイン講座

2021/12/01 -

Academic Activities 2

東北大学中性子散乱分光器（6G-TOPAN）装置責任者

2021/09 - Present

Activity type: Other
東北大学中性子散乱装置群PATH 装置担当者

2017 - 2021

Activity type: Other

Other 2

東北大学中性子散乱分光器（6G-TOPAN）装置責任者

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日本原子力科学研究開発機構JRR3の6Gに設置された東北大学中性子散乱分光器（6G-TOPAN）の装置責任者
Frontier of physics (introduction to physics)