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J-GLOBAL ID：200901076058362705 Update date: Dec. 12, 2024

Tomiyasu Keisuke

トミヤスケイスケ | Tomiyasu Keisuke

Research field (1)： Magnetism, superconductivity, and strongly correlated systems

Research keywords (4)：全固体電池とリチウム電池分析 , 中性子と放射光 , 無機材料(磁石、水素、結晶、ガラス) , マスマティクスとインフォマティクスの産業利用

Research theme for competitive and other funds (9)：

2018 - 2022 Multi-probe study on the spin and orbital quantum critical point in cobaltites
2017 - 2022 Frustration-induced spin textures
2015 - 2019 Study on novel magnetic order and transport properties in pyrochlore iridium oxides
2014 - 2016 Study of spin-lattice dynamics and transports in frustrated spinel oxides
2011 - 2016 Study on strongly correlated electron systems by using high-order neutron magnetic scattering processes

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Papers (82)：

K. Tomiyasu, Y. P. Mizuta, M. Matsuura, K. Aoyama, H. Kawamura. Observation of topological Z2 vortex fluctuations in the frustrated Heisenberg magnet NaCrO2. Physical Review B. 2022. 106. 5
Yo P. Mizuta, Kazushi Aoyama, Keisuke Tomiyasu, Masato Matsuura, Hikaru Kawamura. Spin Dynamics Simulation of the Z2-vortex Fluctuations. Journal of the Physical Society of Japan. 2022. 91. 3
Susumu Okubo, Hitoshi Ohta, Tatsuya Ijima, Tatsuya Yamazaki, Wei-min Zhang, Shigeo Hara, Shinichi Ikeda, Hiroyuki Oshima, Miwako Takahashi, Keisuke Tomiyasu, et al. THz ESR Study of Peculiar Co Pyrochlore System GeCo2O4 Using Pulsed High Magnetic Field. Applied Magnetic Resonance. 2021. 52. 4. 411-424
Atsushi Hariki, Ru-Pan Wang, Andrii Sotnikov, Keisuke Tomiyasu, Davide Betto, Nicholas B. Brookes, Yohei Uemura, Mahnaz Ghiasi, Frank M. F. de Groot, Jan Kuneš. Damping of spinful excitons in LaCoO3 by thermal fluctuations: Theory and experiment. Physical Review B. 2020. 101. 24
H. Ueda, S. Onoda, Y. Yamaguchi, T. Kimura, D. Yoshizawa, T. Morioka, M. Hagiwara, M. Hagihala, M. Soda, T. Masuda, et al. Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin-12 ladder. Physical Review B. 2020. 101. 14. 1-16

MISC (62)：

Hiroshi Ueda, Shigeki Onoda, Yasuhiro Yamaguchi, Tsuyoshi Kimura, Daichi Yoshizawa, Toshiaki Morioka, Masayuki Hagiwara, Masato Hagihala, Minoru Soda, Takatsugu Masuda, et al. Emergent spin-$1$ Haldane gap and ferroelectricity in a frustrated spin-$1/2$ ladder. 2018
石橋広記, 下野聖矢, 富安啓輔, LEE Sanghyun, 河口彰吾, 岩根啓樹, 中尾裕則, 鳥居周輝, 神山崇, 神山崇, et al. スピネル酸化物CoV₂O₄の微小な格子歪みと長距離軌道秩序. 日本結晶学会年会講演要旨集. 2017. 2017. 83
石橋広記, 下野聖矢, 富安啓輔, LEE Sanghyun, 河口彰吾, 岩根啓樹, 佐賀山基, 中尾裕則, 鳥居周輝, 神山崇, et al. Observation of small lattice distortion and crystal and magnetic structural analysis in spinel compound CoV₂O₄. 量子ビームサイエンスフェスタ(Web). 2017. 2016
富安啓輔, LEE Sanghyun, 石橋広記, 高橋佑生, 川股隆行, 小池洋二, 野島勉, 鳥居周輝, 神山崇. 超高分解能粉末中性子回折によるスピネルCuCr₂O₄の磁気構造. 日本物理学会講演概要集(CD-ROM). 2017. 72. 2
富安啓輔, 伊藤菜緒子, 岡崎竜二, 高橋佑生, 小野寺貢, 岩佐和晃, 岩佐和晃, 野島勉, 青山拓也, 大串研也, et al. Sc置換LaCoO₃における磁化と体積磁歪-スピン状態転移近傍に現れる励起子絶縁体の候補物質としての検討-. 日本物理学会講演概要集(CD-ROM). 2017. 72. 2

Professional career (1)：

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