Researchers

OHNISHI Kohei

OHNISHI Kohei
Associate Professor
Faculty Department of Electrical, Electronic and Communication Engineering / Graduate School of Science and Engineering
Researchmap https://researchmap.jp/ohnishi-kohei

Education and Career

Education

  • 2003/04 - 2007/03 , The University of Tokyo, Faculty of Science,
  • 2005/04 - 2006/03 , The University of Tokyo, Faculty of Science,
  • 2007/04 - 2009/03 , The University of Tokyo, Graduate School of Frontier Sciences,
  • 2009/04 - 2012/03 , The University of Tokyo, Graduate School of Frontier Sciences,

Academic & Professional Experience

  • Apr. 2023 - Today , Kindai University Faculty of Science and Engineering Department of Electric and Electronic Engineering 准教授
  • Mar. 2022 - Mar. 2025 , 株式会社ランデフト コンサルタント
  • Sep. 2013 - Mar. 2023 , Kyushu University Faculty of Sciences Department of Physics 助教
  • Apr. 2018 - Mar. 2020 , University of Cambridge Department of Materials Science and Metallurgy 客員研究員
  • Apr. 2012 - Aug. 2013 , Hitachi, Ltd., Central Research Laboratory 研究員
  • Apr. 2009 - Mar. 2012 , Japan Society for the Promotion of Science 特別研究員（DC1）

Research Activities

Research Areas

  • Nanotechnology/Materials , Applied physics - general

Research Interests

Superconducting device, Spin dependent transport, Spintronics, 量子情報, プロセスインフォマティクス

Published Papers

  1. Realisation of de Gennes’ absolute superconducting switch with a heavy metal interface
    Hisakazu Matsuki; Alberto Hijano; Grzegorz P. Mazur; Stefan Ilić; Binbin Wang; Iuliia Alekhina; Kohei Ohnishi; Sachio Komori; Yang Li; Nadia Stelmashenko; Niladri Banerjee; Lesley F. Cohen; David W. McComb; F. Sebastián Bergeret; Guang Yang; Jason W. A. Robinson
    Nature Communications  1, Jul. 2025 
  2. Exchange Bias Induced by the Spin-Glass-Like State in a Te-Rich FeGeTe van der Waals Ferromagnet
    Shaojie Hu; Xiaomin Cui; Zengji Yue; Pangpang Wang; Kohei Ohnishi; Shu-Qi Wu; Sheng-Qun Su; Osamu Sato; Sunao Yamada; Takashi Kimura
    Nano Letters  24  (23)  , 6924-6930, 31, May. 2024  , Refereed
  3. Influence of heat flow control on dynamical spin injection in CoFeB/Pt/CoFeB trilayer
    Sora Obinata; Riku Iimori; Kohei Ohnishi; Takashi Kimura
    Scientific Reports  12  (1)  Dec. 2022  , Refereed

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Conference Activities & Talks

  1. 力学物性測定法による金属薄膜の膜厚測定 , 小池聖樹,竹嶋将吾,大西紘平 , 第73回 応用物理学会 春季学術講演会 , 16, Mar. 2026
  2. Non-reciprocal Transport Observed in Conventional Superconductors , Yui Sawada; Sora Obinata; Ren Oshima; Kohei Ohnishi; Takashi Kimura , 8th International Conference on Advanced Electromaterials (ICAE 2025) , 25, Nov. 2025
  3. 量子×情報×デバイス , 大西紘平 , 理工共創リサーチハブ , 20, Nov. 2025

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MISC

  1. 面内スピンバルブ構造によるスピントリプレット状態の検出 , 大西紘平 , 九州大学低温センターだより , 14 , 2 , 6 , Mar. 2020
  2. 超伝導体中のスピン偏極準粒子緩和過程 , 大西紘平 , 九州大学低温センターだより , 8 , 12 , 17 , Mar. 2014

Awards & Honors

  1. Sep. 2023, 日本磁気学会, 学会活動貢献賞

Research Grants & Projects

  1. 日本学術振興会, 科学研究費助成事業, キャリア密度の非対称性が超伝導ダイオード効果に及ぼす影響 , 近畿大学
  2. 国立研究開発法人新エネルギー・産業技術総合開発機構, ＮＥＤＯ先導研究プログラム, 高品質二次元層状磁石を用いた磁気熱電デバイスと低環境負荷作成プロセスの開発 , 近畿大学
  3. Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Developments of reconfigurable quantum superconducting devices based on rotational spin current , Kyushu University

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