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J-GLOBAL ID：201501015588261852   Update date: Feb. 06, 2024

Takahashi Kei

タカハシ ケイ | Takahashi Kei
Affiliation and department：
国立研究開発法人理化学研究所 創発物性科学研究センター

About 国立研究開発法人理化学研究所 創発物性科学研究センター


Job title： 上級研究員
Homepage URL  (1)： https://www.cems.riken.jp/jp/laboratory/scirg
Research field  (4)： Magnetism, superconductivity, and strongly correlated systems ,  Electronic devices and equipment ,  Crystal engineering ,  Applied materials
Research keywords  (4)： 強相関エレクトロニクス ,  量子ホール効果 ,  酸化物薄膜 ,  トポロジカル絶縁体
Research theme for competitive and other funds  (7)：
  • 2023 - 2026 二次元Mott絶縁体人工構造による新奇電子相探索
  • 2018 - 2021 Quantum transport phenomena of ferromagnetic two dimensional electron system by gas source MBE films
  • 2015 - 2019 高移動度二次元酸化物構造による非散逸電流デバイスの創成
  • 2015 - 2016 デルタドープ型SrTiO3二次元電子によるd電子系量子ホール効果の研究
  • 2015 - 2016 New approach of thermoelectric research of chalcogenide superlattices
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Papers (75)：
  • H. Handa, Y. Okamura, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, Y. Tokura, Y. Takahashi. Terahertz field driven giant nonlinear phonon response in ferroelectric semiconductor In-doped (Sn,Pb)Te. Physical Review B. 2024. 109. 8
  • Gate-electric-field and magnetic-field control of versatile topological phases in a semi-magnetic topological insulator. Appl.Phys.Lett. 2023. 123. 183102-1-183102-6
  • D. Maryenko, I. V. Maznichenko, S. Ostanin, M. Kawamura, K. S. Takahashi, M. Nakamura, V. K. Dugaev, E. Ya. Sherman, A. Ernst, M. Kawasaki. Superconductivity at epitaxial LaTiO3-KTaO3 interfaces. APL MATERIALS. 2023. 11. 6
  • N. Takahara, K. S. Takahashi, K. Maruhashi, Y. Tokura, M. Kawasaki. Magnetic and transport properties of electron doped EuTiO3 thin films with La3+ (4f) or Gd3+ (4f7) donors grown by gas source molecular beam epitaxy. APL Materials. 2023. 11. 3
  • Minoru Kawamura, Masataka Mogi, Ryutaro Yoshimi, Takahiro Morimoto, Kei S. Takahashi, Atsushi Tsukazaki, Naoto Nagaosa, Masashi Kawasaki, Yoshinori Tokura. Laughlin charge pumping in a quantum anomalous Hall insulator. Nature Physics. 2023
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MISC (22)：
  • 岡崎雄馬, 大江武彦, 川村稔, 吉見龍太郎, 中村秀司, 高田真太郎, 茂木将孝, 高橋圭, 塚崎敦, 川崎雅司, et al. Universality of quantum anomalous Hall effect in magnetic topological insulator Cr(Bi, Sb)2Te3 toward resistance standard. 日本物理学会講演概要集(CD-ROM). 2020. 75. 2
  • Yoshimi Ryutaro, Mogi Masataka, Tsukazaki Atsushi, Kozuka Yusuke, Takahashi Kei, Kawasaki Masashi, Tokura Yoshinori. Towards the observation of domain-wall conduction in magnetic topological insulator Crx(Bi1-ySby)2-xTe3 thin films. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1187-1187
  • Okada K. N., Takahashi Y., Yoshimi R., Mogi M., Tsukazaki A., Takahashi K. S., Ogawa N., Kawasaki M., Tokura Y. 22aBA-7 Terahertz magneto-optical responses in a quantized anomalous Hall state on a magnetic topological insulator thin film. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1416-1416
  • Mogi M., Yoshimi R., Tsukazaki A., Yasuda K., Kozuka Y., Takahashi K. S., Kawasaki M., Tokura Y. 22aBA-6 Higher-temperature quantum anomalous Hall effect in magnetic modulation-doped topological insulators. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1415-1415
  • Yasuda K., Tsukazaki A., Yoshimi R., Takahashi K. S., Kawasaki M., Tokura Y. 21pBC-6 Unidirectional magnetoresistance of topological insulator heterostructure. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1261-1261
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Lectures and oral presentations  (10)：
  • Quantum transport of spin polarized electrons in EuTiO3 films grown by gas source MBE
    (2021 APS March Meeting (On-line meeting) 2021)
  • Quantum transport of spin polarized electrons in EuTiO3 films
    (OSS (Oxide Superspin) Workshop 2019 2019)
  • Quantum transport in magnetic semiconductor EuTiO3 films
    (2019 MRS SPRING MEETING 2019)
  • ガスソース分子線エピタキシーで創る酸化物量子物性
    (ポスト新機能物質開発のための戦略会議 2017)
  • ガスソースMBEで作製した高品質遷移金属酸化物人工格子の新物性
    (第4回酸化物研究の新機軸に向けた学際討論会 2016)
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Education (4)：
  • 1999 - 2002 The University of Tokyo
  • 1997 - 1999 The University of Tokyo
  • 1993 - 1997 The University of Tokyo The Faculty of Engineering Department of Applied Chemistry
  • 1989 - 1992 茨城県立土浦第一高等学校
Professional career (1)：
  • Dr. (Engineering)
Work history (7)：
  • 2013/04 - 現在 RIKEN Center for Emergent Matter Science Strong Correlation Interface Research Group Senior Research Scientist
  • 2015/10 - 2019/03 科学技術振興事業団戦略的創造研究事業さきがけ 研究員兼任
  • 2010/06 - 2013/03 RIKEN
  • 2007/10 - 2010/05 RIKEN
  • 2007/04 - 2007/10 東京大学大学院新領域創成科学科 Hwang研究室 日本学術振興会特別研究員
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Awards (4)：
  • 2021/04 - CEMS AWARD Exploration of novel quantum transport phenomena in oxide heterostructures fabricated with an originally-developed molecular beam epitaxy system
  • 2019/11 - International workshop on oxide electronics IWOE-26 conference prize for best poster presentation
  • 2015/05 - Nature publishing group Nature Physics Poster Prize
  • 2014/10 - IWOE-21 Best Speaker Award
Association Membership(s) (2)：
THE PHYSICAL SOCIETY OF JAPAN ,  THE JAPAN SOCIETY OF APPLIED PHYSICS
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