Rchr
J-GLOBAL ID：201401074810238463
Update date: Nov. 06, 2024
Tokiwa Yoshifumi
トキワ ヨシフミ | Tokiwa Yoshifumi
Affiliation and department：
Job title：
副主任研究員
Research field (1)：
Magnetism, superconductivity, and strongly correlated systems
Research theme for competitive and other funds (4)：
- 2024 - 2028 Discovering novel physical properties through evaluation of local electronic Structure in f-electron systems with multiple chalcogens using high-quality single crystals
- 2020 - 2026 Clarifying the mechanism of spin-triplet superconductivity in uranium compounds
- 2020 - 2022 Quantum criticality of uranium ferromagnetic superconductors
- 2015 - 2017 Observation of elementary excitations in quantum spin ice
Papers (162)：
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Tokiwa Yoshifumi, Opletal P., Sakai Hironori, Kambe Shinsaku, Yamamoto Etsuji, Kimata Motoi*, Awaji Satoshi*, Sasaki Takahiko*, Aoki Dai*, Haga Yoshinori, et al. Reinforcement of superconductivity by quantum critical fluctuations of metamagnetism in UTe$_2. Physical Review B. 2024. 109. 14. L140502\_1-L140502\_6
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Zhao K.*, Tokiwa Yoshifumi, Chen H.*, Gegenwart P.*. Discrete degeneracies distinguished by the anomalous Hall effect in a metallic kagome ice compound. Nature Physics. 2024. 20. 3. 442-449
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Suetsugu Shota*, Sakai Hironori, Opletal P., Tokiwa Yoshifumi, Haga Yoshinori, 12 of others*. Fully gapped pairing state in spin-triplet superconductor UTe$_2. Science Advances (Internet). 2024. 10. 6. eadk3772\_1-eadk3772\_6
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Tokunaga Yo, Sakai Hironori, Kambe Shinsaku, Opletal P., Tokiwa Yoshifumi, Haga Yoshinori, Kitagawa Shunsaku*, Ishida Kenji*, Aoki Dai*, Knebel G.*, et al. Longitudinal spin fluctuations driving field-reinforced superconductivity in UTe$_2. Physical Review Letters. 2023. 131. 22. 226503\_1-226503\_7
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Y. Tokiwa, H. Sakai, S. Kambe, P. Opletal, E. Yamamoto, M. Kimata, S. Awaji, T. Sasaki, Y. Yanase, Y. Haga, et al. Anomalous vortex dynamics in the spin-triplet superconductor UTe2. Physical Review B. 2023
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MISC (32)：
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常盤欣文, OPLETAL Petr, 酒井宏典, 久保勝規, 神戸振作, 山本悦嗣, 木俣基, 淡路智, 佐々木孝彦, 青木大, et al. Induced first-order transition inside superconducting state by metamagnetism in an easy-axis magnetic field on UTe2. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
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Naritsuka M, Endo R, Toda R, Ishii T, Shimozawa M, Hanaoka Y, Kasahara S, Tokiwa Y, Kasahara Y, Shibauchi T, et al. 17aDA-1 Global inversion symmetry breaking in tricolor superlattice of CeCoIn_5. 日本物理学会講演概要集. 2015. 70. 2. 1762-1762
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Hanaoka Y., Endou R., Toda R., Shimozawa M., Kasahara S., Tokiwa Y., Shibauchi T., Terashima T., Matsuda Y. 7pBK-7 Controlling the quantum criticality in heavy fermion superlattices CeRhIn_5/YbRhIn_5. Meeting abstracts of the Physical Society of Japan. 2014. 69. 2. 344-344
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Sakai H., Kambe S., Tokunaga Y., Chudo H., Aoki D., Tokiwa Y., Matsuda T.D., Yamamoto E., Haga Y., Onuki Y. 26aWR-8 NMR/NQR Study (III) of Antiferromagnet UIn_3. Meeting abstracts of the Physical Society of Japan. 2008. 63. 1. 638-638
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Sakai H., Kambe S., Tokunaga Y., Chudo H., Aoki D., Tokiwa Y., Matsuda T. D., Yamamoto E., Haga Y., Onuki Y. 21pPSA-11 NMR/NQR Study (II) of Antiferromagnet UIn_3. Meeting abstracts of the Physical Society of Japan. 2007. 62. 2. 563-563
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Lectures and oral presentations (51)：
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Magnetocaloric effect in frustrated quantum magnets
(Korean Physical Society Meeting)
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High-field NMR study of spin fluctuations and superconductivity in UTe$_2$
(日本物理学会第79回年次大会(2024年))
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Basic physical properties of single crystalline HoTr$_2$Zn$_{20}$ (Tr = Co, Rh, Ir)
(日本物理学会第79回年次大会(2024年))
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Crystal structure and low-temperature properties of uranium-containing Tsai-type approximant Al-Au-U
(日本物理学会第79回年次大会(2024年))
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Magnetism in uranium-based van der Waals compound UTe$_3$
(日本物理学会第79回年次大会(2024年))
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