研究成果
2024
4f electron temperature driven ultrafast electron localization
Kohei Yamagami, Hiroki Ueda, Urs Staub, Yujun Zhang, Kohei Yamamoto, Sang Han Park, Soonnam Kwon, Akihiro Mitsuda, Hirofumi Wada, Takayuki Uozumi, Kojiro Mimura, and Hiroki Wadati
Physical Review Research 6(2), 023099/1-9 (2024)
DOI:10.1103/PhysRevResearch.6.023099
Evaluation of Electronic Structure of Prussian Blue Analogue RbMn[Fe(CN)6] in Temperature-Induced Phase Transition Phenomena
T. Tsukamoto, K. Hayashi, T. Iwazumi, H. Tokoro, K. Nakagawa, and S. Ohkoshi
Journal of Physical Society of Japan 93(4), 044704 (2024)
DOI:10.7566/JPSJ.93.044704
2023
Structural studies of Prussian Blue Analogs containing trivalent hexacyanoferrate by extended X-ray absorption fine structure spectroscopy
T. Iwazumi, A. Kusumoto, R. Takeshita, D. Kobayashi, H. Tokoro, K. Nakagawa, and S. Ohkoshi
Journal of Electron Spectroscopy and Related Phenomena 271, 147421 (2024)
DOI:10.1016/j.matpr.2024.147421
共鳴硬X線光電子分光によるCr2O3膜/冷延鋼板界面近傍における鉄の化学結合状態分析
西原克浩，桒野大介，吉住歩樹，柴垣喜則，三村功次郎
SPring-8/SACLA利用研究成果集 11 (4), 259-267 (2023)
Bulk superconductivity in Pb-substituted BiS2-based compounds studied by hard x-ray spectroscopy
A. Yamasaki, T. Oguni, T. Hayashida, K. Miyazaki, N. Tanaka, K. Nakagawa, K. Tamura, K. Mimura, N. Kawamura, H. Fujiwara, G. Nozue, A. Ose, Y. Kanai-Nakata, A. Higashiya, S. Hamamoto, K. Tamasaku, M. Yabashi, T. Ishikawa, S. Imada, A. Sekiyama, H. Sakata, S. Demura
Physical Review B 109, 045131 (2023)
DOI:10.1103/PhysRevB.109.045131
Study on the Tm Electronic States in TmX3 (X=Al, Ga, In, and Pd) Using X-ray Emission and Photoemission Spectroscopies
Naomi KAWAMURA, Norimasa SASABE, Akira YASUI, Yusuke HIROSE, Fuminori HONDA, Kojiro MIMURA, Yoshihito MATSUMOTO, and Takayuki UOZUMI
JPS Conference Proceedings 38, 011108 (2023)
DOI:10.7566/JPSCP.38.011108
Observation of Raman components in resonant X-ray emission spectra of Fe cyanide
T. Iwazumi, M. Tanaka, A. Ueno, Y. Koga, Y. Kitajima, and Y. Isozumi
Materials Today: PROCEEDINGS (2023)
DOI:10.1016/j.matpr.2023.05.373
Detailed Fe 3d electronic structures of Prussian blue analogs studied by X-ray absorption spectroscopy
K. Kudo, R. Takeshita, D. Kobayashi, T. Iwazumi, H. Tokoro, K. Nakagawa, S. Ohkoshi, and Y. Kitajima
Materials Today: Proceedings (2023)
DOI:10.1016/j.matpr.2023.04.280
Observation of temperature-dependent Fermi surface evolution at the valence transition of YbInCu4
Hiroaki Anzai, Atsushi Hariki, Hitoshi Sato, Masashi Arita, Tao Zhuang, and Koichi Hiraoka
Physical Review B 108, 075116 (2023)
DOI:10.1103/PhysRevB.108.075116
2022
Metal-insulator transition in CuIr2S4 observed by Cu Kα resonant x-ray emission spectroscopy
Hitoshi Sato, Makuma Tatsumoto, Kazuhiro Maeda, Yukihiro Taguchi, Naomi Kawamura, Hiroki Ishibashi
Physical Review B 106, 155151 (2022)
DOI: 10.1103/PhysRevB.106.155151
Photoemission Spectroscopy Study on the Heavy-Fermion Compound YbAgCu4
Hiroaki Anzai, Ryoga Tawara, Yasuaki Kikuchi, Hitoshi Sato, Masashi Arita, Ren Takaaze, Keisuke T. Matsumoto, Koichi Hiraoka
Journal of the Physical Society of Japan 91(11), 114703 (2022)
DOI: 10.7566/JPSJ.91.114703
2021
Charge-Ordered State and Low-Dimensional Magnetic Fluctuations in Yb5Ge4 Single Crystal
Shinji Michimura, Masashi Kosaka, Ayumi Machida, Ryosuke Numakura, Ryosuke Iizuka, Susumu Katano, Yoshiki Imai, Naoki Shirakawa, Yuichi Yamasaki, Hironori Nakao, Hitoshi Sato, Shigenori Ueda, Kojiro Mimura
Journal of the Physical Society of Japan 90, 044703 (2021)
DOI:10.7566/JPSJ.90.044703
Temperature dependence of electronic structure on the ferroelectric phase transition of BaTiO3
Y. Tezuka, S. Nozawa, N. Nakajima, and T. Iwazumi
Physical Review B 104, 235148 (2021)
DOI:10.1103/PhysRevB.104.235148
Photoemission Spectroscopy Study on the Heavy-Fermion Compound YbAgCu4
Hiroaki Anzai, Ryoga Tawara, Yasuaki Kikuchi, Hitoshi Sato, Masashi Arita, Ren Takaaze, Keisuke T. Matsumoto, Koichi Hiraoka
Journal of the Physical Society of Japan 91(11), 114703 (2021)
DOI: 10.7566/JPSJ.91.114703
Hybridization of Bogoliubov Quasiparticles between Adjacent CuO2 Layers in the Triple-Layer Cuprate Bi2Sr2Ca2Cu3O10+δ Studied by Angle-Resolved Photoemission Spectroscopy
S. Ideta, S. Johnston, T. Yoshida, K. Tanaka, M. Mori, H. Anzai, A. Ino, M. Arita, H. Namatame, M. Taniguchi, S. Ishida, K. Takashima, K. M. Kojima, T. P. Devereau, S. Uchida, and A. Fujimori
Physical Review Letters 127, 217004 (2021)
DOI: 10.1103/PhysRevLett.127.217004
2020
Temperature-induced valence transition in EuNi2(Si1-xGex)2 investigated by high-energy resolution fluorescence detection X-ray absorption spectroscopy
Ryohei Shimokasa, Naomi Kawamura, Takayuki Matsumoto, Koki Kawakami, Taku Kawabata, Gen Isumi, Takayuki Uozumi, Akihiro Mitsuda, Hirofumi Wada, Masaichiro Mizumaki, Kojiro Mimura
RADIATION PHYSICS AND CHEMISTRY 175, 108150 (2020)
DOI: 10.1016/j.radphyschem.2019.02.009
Abrupt change in hybridization gap at the valence transition of YbInCu4
Hiroaki Anzai, Suzuna Ishihara, Kojiro Mimura, Hitoshi Sato, Masashi Arita, Tao Zhuang, and Koichi Hiraoka
Physical Review Research 2, 033408 (2020)
DOI: 10.1103/PhysRevResearch.2.033408
Temperature dependence of the Kondo resonance in the photoemission spectra of the heavy-fermion compounds YbXCu4 (X = Mg, Cd, and Sn)
Hiroaki Anzai, Kohei Morikawa, Hiroto Shiono, Hitoshi Sato, Shin-ichiro Ideta, Kiyohisa Tanaka, Tao Zhuang, Keisuke T. Matsumoto, and Koichi Hiraoka
Physical Review B 101, 235160 (2020)
DOI: 10.1103/PhysRevB.101.235160
Temperature dependence of the Kondo resonance peak in photoemission spectra of rare-earth compound YbMgCu4
Kohei Morikawa, Hiroto Shiono, Hitoshi Sato, Shin-ichiro Ideta, Kiyohisa Tanaka, Tao Zhuang, Keisuke T. Matsumoto, Koichi Hiraoka, and Hiroaki Anzai
JPS Conference Proceedings 30, 011119 (2020)
DOI: 10.7566/JPSCP.30.011119
2019
Yb L3 Resonant Hard X-Ray Photoemission Spectroscopy of Valence Transition Compound YbInCu4
Kazuhiro Maeda, Hitoshi Sato, Yu Akedo, Taku Kawabata, Kodai Abe, Ryohei Shimokasa, Akira Yasui, Masaichiro Mizumaki, Naomi Kawamura, Eiji Ikenaga, Satoshi Tsutsui, Keisuke Matsumoto, Koichi Hiraoka, Kojiro Mimura
Proceedings of the International Conference on Strongly Correlated Electron Systems 30, 011137 (2020)
DOI: /10.7566/JPSCP.30.011137
Study on the Correlation of U Valence States with U–U Distance in UPd2Cd20
Naomi Kawamura, Yusuke Hirose, Fuminori Honda, Ryohei Shimokasa, Naoki Ishimatsu, Masaichiro Mizumaki, Saori I. Kawaguchi, Naohisa Hirao, Kojiro Mimura
Proceedings of the International Conference on Strongly Correlated Electron Systems 30, 011172 (2020)
DOI: /10.7566/JPSCP.30.011172
Electronic Structure of the Valence Transition System Eu(Rh1-xTx)2Si2 (T = Co, Ir) Studied by High-Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy
Ryohei Shimokasa, Naomi Kawamura, Taku Kawabata, Gen Isumi, Takayuki Uozumi, Akihiro Mitsuda, Hirofumi Wada, Fuminori Honda, Masato Hedo, Takao Nakama, Yoshichika Ōnuki, Masaichiro Mizumaki, Kojiro Mimura
Proceedings of the International Conference on Strongly Correlated Electron Systems 30, 011134 (2020)
DOI: /10.7566/JPSCP.30.011134
Heavy Fermion State of YbNi2Si3 without Local Inversion Symmetry
Shota Nakamura, Kazushi Hyodo, Yuji Matsumoto, Yoshinori Haga, Hitoshi Sato, Shigenori Ueda, Kojiro Mimura, Katsuyoshi Saiki, Kosei Iso, Minoru Yamashita, Shunichiro Kittaka, Toshiro Sakakibara, Shigeo Ohara
Journal of the Physical Society of Japan 89(2), 024705 (2020)
DOI: /10.7566/JPSJ.89.024705
Photoinduced valence dynamics in EuNi2(Si0.21Ge0.79)2 studied via time-resolved x-ray absorption spectroscopy
Y. Yokoyama, K. Kawakami, Y. Hirata, K. Takubo, K. Yamamoto, K. Abe, A. Mitsuda, H. Wada, T. Uozumi, S. Yamamoto, I. Matsuda, S. Kimura, K. Mimura, H. Wadati
Physical Review B 100, 115123 (2019)
DOI: /10.1103/PhysRevB.100.115123
高分解能 Co 2p 共鳴非弾性 X線散乱による LaCoO3のスピン転移の観測
田口 幸広, 柏木 謙吾, 川又 修一, 宮脇 淳, 原田 慈久, 三村 功次郎
SPring-8/SACLA利用研究成果集 7(2), (2019)
Mixed-valence state of the rare-earth compounds YbXCu4 (X = Mg, Cd, In, and Sn): Magnetic susceptibility, x-ray diffraction, and x-ray absorption spectroscopy investigations
H. Anzai, S. Ishihara, H. Shiono, K. Mimura, T. Iwazumi, H. Sato, T. Zhuang, K. T. Matsumoto, and K. Hiraoka
Physical Review B 100, 245124 (2019)
DOI: /10.1103/PhysRevB.100.245124
Yb LIII-edge and Cu K-edge X-ray Absorption Spectroscopy in YbCdCu4 and YbInCu4
H. Anzai, S. Ishihara, H. Shiono, K. Mimura, T. Iwazumi, H. Sato, T. Zhuang, K. T. Matsumoto, and K. Hiraoka
AIP Conference Proceedings 2054, 040013 (2019)
DOI: 10.1063/1.5084607
Temperature dependence of the Kondo resonance peak in photoemission spectra of YbCdCu4
H. Shiono, S. Ishihara, K. Mimura, H. Sato, E. F. Schwier, K. Shimada, M. Taniguchi, S.-I. Ideta, K. Tanaka, T. Zhuang, K. T. Matsumoto, K. Hiraoka, and H. Anzai
AIP Conference Proceedings 2054, 040013 (2019)
DOI: 10.1063/1.5084614