Basic Information

Affiliated programs (koza)

• Graduate School of Engineering, 分子工学専攻 分子材料学講座, 助教

Faculty

• Faculty of Engineering
• 工学部

Professional Memberships

• Physical Society of Japan
• Japan Society of Applied Physics

Academic Degree

• 23 Mar. 2017

  京都大学修士（工学）
• 23 Jan. 2020

  京都大学博士（工学）
• 修士（工学）(京都大学)
• 博士（工学）(京都大学)

Academic Resume (Graduate Schools)

• 京都大学, 大学院工学研究科修士課程電子工学専攻, 修了
• 京都大学, 大学院工学研究科博士後期課程電子工学専攻, 修了

Academic Resume (Undergraduate School/Majors)

• 京都大学, 理学部
• 京都大学, 工学部電気電子工学科(3年次転学部), 卒業

Research History

• From Aug. 2025, To Present

  Kyoto University, Institute for Chemical Research, 特定准教授
• From Jun. 2023, To Jul. 2024

  Kyoto University, Institute for Chemical Research, 助教
• From Apr. 2023, To May 2023

  Kyoto University, Institute for Chemical Research, Program-Specific Researcher
• From Oct. 2022, To Mar. 2023

  Western Digital GK, Staff Engineer, R&D Engineering
• From Feb. 2020, To Sep. 2022

  Kyoto University, Graduate School of Engineering Department of Electronic Science and Engineering, Assistant Professor

ID,URL

• ORCID ID

  0000-0001-9516-4785

• J-Global ID

  202201001915385947

• Researcher number

  00879265

researchmap URL

• https://researchmap.jp/ei_shigematsu

Research

Research Areas

• Natural sciences, Semiconductors, optical and atomic physics
• Nanotechnology/Materials, Optical engineering and photonics
• Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electronic devices and equipment, spintronics

Papers

• Tunable Magnon Polaritons via Eddy-Current-Induced Dissipation in Metallic-Banded YIG Spheres

  Tatsushi Uno; Shugo Yoshii; Sotaro Mae; Ei Shigematsu; Ryo Ohshima; Yuichiro Ando; Masashi Shiraishi

  arXiv, Apr. 2025, Corresponding author

  
• Publisher Correction: Synthetic Rashba spin–orbit system using a silicon metal-oxide semiconductor (Nature Materials, (2021), 20, 9, (1228-1232), 10.1038/s41563-021-01026-y)

  Soobeom Lee; Hayato Koike; Minori Goto; Shinji Miwa; Yoshishige Suzuki; Naoto Yamashita; Ryo Ohshima; Ei Shigematsu; Yuichiro Ando; Masashi Shiraishi

  Nature Materials, 01 Sep. 2021

  
• Observation of large spin conversion anisotropy in bismuth

  Naoki Fukumoto; Ryo Ohshima; Motomi Aoki; Yuki Fuseya; Masayuki Matsushima; Ei Shigematsu; Teruya Shinjo; Yuichiro Ando; Shoya Sakamoto; Masanobu Shiga; Shinji Miwa; Masashi Shiraishi

  Proceedings of the National Academy of Sciences, 28 Mar. 2023, Peer-reviewed

  
• Ferroic Berry Curvature Dipole in a Topological Crystalline Insulator at Room Temperature

  Taiki Nishijima; Takuto Watanabe; Hiroaki Sekiguchi; Yuichiro Ando; Ei Shigematsu; Ryo Ohshima; Shinji Kuroda; Masashi Shiraishi

  Nano Letters, 01 Mar. 2023, Peer-reviewed

  
• Anomalous sign inversion of spin-orbit torque in ferromagnetic/nonmagnetic bilayer systems due to self-induced spin-orbit torque

  Motomi Aoki; Ei Shigematsu; Ryo Ohshima; Teruya Shinjo; Masashi Shiraishi; Yuichiro Ando

  Physical Review B, 17 Nov. 2022, Peer-reviewed

  
• All‐Electric Spin Device Operation Using the Weyl Semimetal, WTe₂, at Room Temperature

  Kosuke Ohnishi; Motomi Aoki; Ryo Ohshima; Ei Shigematsu; Yuichiro Ando; Taishi Takenobu; Masashi Shiraishi

  Advanced Electronic Materials, 18 Oct. 2022, Peer-reviewed

  
• Realization of efficient tuning of the Fermi level in iron-based ferrimagnetic alloys

  N. Yamashita; E. Shigematsu; S. Honda; R. Ohshima; M. Shiraishi; Y. Ando

  Physical Review Materials, Oct. 2022, Peer-reviewed

  
• Full calculation of inter-conversion between charge, spin, and heat current using a common partial differential equation platform

  Ei Shigematsu; Eiiti Tamura; Ryo Ohshima; Yuichiro Ando; Masashi Shiraishi

  Journal of Applied Physics, 28 Jun. 2022, Peer-reviewed, Lead author, Corresponding author

  
• Efficient room-temperature magnetization direction detection by means of the enhanced anomalous Nernst effect in a Weyl ferromagnet

  L. Leiva; S. Granville; Y. Zhang; S. Dushenko; E. Shigematsu; R. Ohshima; Y. Ando; M. Shiraishi

  Physical Review Materials, 15 Jun. 2022, Peer-reviewed

  Access this paper :

  
• Current-induced out-of-plane torques in a single permalloy layer with lateral structural asymmetry

  Motomi Aoki; Ei Shigematsu; Ryo Ohshima; Teruya Shinjo; Masashi Shiraishi; Yuichiro Ando

  Physical Review B, 07 Apr. 2022, Peer-reviewed

  
• Influence of adjacent metal films on magnon propagation in Y3Fe5O12

  Sotaro Mae; Ryo Ohshima; Ei Shigematsu; Yuichiro Ando; Teruya Shinjo; Masashi Shiraishi

  Physical Review B, 14 Mar. 2022, Peer-reviewed

  
• Investigation of the thermal tolerance of silicon-based lateral spin valves

  N. Yamashita; S. Lee; R. Ohshima; E. Shigematsu; H. Koike; Y. Suzuki; S. Miwa; M. Goto; Y. Ando; M. Shiraishi

  Scientific Reports, Dec. 2021, Peer-reviewed

  Access this paper :

  
• Coexistence of low-frequency spin-torque ferromagnetic resonance and unidirectional spin Hall magnetoresistance

  Motomi Aoki; Ei Shigematsu; Ryo Ohshima; Teruya Shinjo; Masashi Shiraishi; Yuichiro Ando

  Physical Review B, 01 Sep. 2021, Peer-reviewed

  
• Observation of a superconducting state of a topological superconductor candidate, FeTe_0.6Se_0.4, equipping ferromagnetic electrodes with perpendicular magnetic anisotropy

  Kosuke Ohnishi; Sachin Gupta; Shigeru Kasahara; Yuichi Kasahara; Yuji Matsuda; Ei Shigematsu; Ryo Ohshima; Yuichiro Ando; Masashi Shiraishi

  Applied Physics Express, 01 Sep. 2021, Peer-reviewed

  
• Synthetic Rashba spin–orbit system using a silicon metal-oxide semiconductor

  Soobeom Lee; Hayato Koike; Minori Goto; Shinji Miwa; Yoshishige Suzuki; Naoto Yamashita; Ryo Ohshima; Ei Shigematsu; Yuichiro Ando; Masashi Shiraishi

  Nature Materials, Sep. 2021, Peer-reviewed

  
• Spin to charge conversion in Si/Cu/ferromagnet systems investigated by ac inductive measurements

  Ei Shigematsu; Lukas Liensberger; Mathias Weiler; Ryo Ohshima; Yuichiro Ando; Teruya Shinjo; Hans Huebl; Masashi Shiraishi

  Physical Review B, 19 Mar. 2021, Peer-reviewed, Lead author

  Access this paper :

  
• Enhancement of low-frequency spin-orbit-torque ferromagnetic resonance signals by frequency tuning observed in Pt/Py, Pt/Co, and Pt/Fe bilayers

  Motomi Aoki; Ei Shigematsu; Masayuki Matsushima; Ryo Ohshima; Syuta Honda; Teruya Shinjo; Masashi Shiraishi; Yuichiro Ando

  AIP Advances, 01 Feb. 2021, Peer-reviewed

  Access this paper :

  
• Giant spin Hall angle in the Heusler alloy Weyl ferromagnet Co2MnGa

  L. Leiva; S. Granville; Y. Zhang; S. Dushenko; E. Shigematsu; T. Shinjo; R. Ohshima; Y. Ando; M. Shiraishi

  Physical Review B, 29 Jan. 2021, Peer-reviewed

  Access this paper :

  
• In-plane spin-orbit torque magnetization switching and its detection using the spin rectification effect at subgigahertz frequencies

  Motomi Aoki; Ei Shigematsu; Masayuki Matsushima; Ryo Ohshima; Syuta Honda; Teruya Shinjo; Masashi Shiraishi; Yuichiro Ando

  Physical Review B, 30 Nov. 2020, Peer-reviewed

  
• Enhancement of spin signals by thermal annealing in silicon-based lateral spin valves

  N. Yamashita; S. Lee; R. Ohshima; E. Shigematsu; H. Koike; Y. Suzuki; S. Miwa; M. Goto; Y. Ando; M. Shiraishi

  AIP Advances, 01 Sep. 2020, Peer-reviewed

  
• Over 1% magnetoresistance ratio at room temperature in non-degenerate silicon-based lateral spin valves

  Hayato Koike; Soobeom Lee; Ryo Ohshima; Ei Shigematsu; Minori Goto; Shinji Miwa; Yoshishige Suzuki; Tomoyuki Sasaki; Yuichiro Ando; Masashi Shiraishi

  Applied Physics Express, 01 Aug. 2020, Peer-reviewed

  
• Spin transport in n-type 3C–SiC observed in a lateral spin-pumping device

  Ei Shigematsu; Ryo Ohshima; Yuichiro Ando; Teruya Shinjo; Tsunenobu Kimoto; Masashi Shiraishi

  Solid State Communications, Jan. 2020, Peer-reviewed, Lead author

  
• Spin-wave-induced lateral temperature gradient in a YIG thin film/GGG system excited in an ESR cavity

  Ei Shigematsu; Yuichiro Ando; Sergey Dushenko; Teruya Shinjo; Masashi Shiraishi

  Applied Physics Letters, 21 May 2018, Peer-reviewed, Lead author

  
• Electrical, optical, and magnetic properties of Sn doped α-Ga₂O₃ thin films

  E. Chikoidze; H. J. von Bardeleben; K. Akaiwa; E. Shigematsu; K. Kaneko; S. Fujita; Y. Dumont

  Journal of Applied Physics, 14 Jul. 2016, Peer-reviewed

  
• Significant reduction in spin pumping efficiency in a platinum/yttrium iron garnet bilayer at low temperature

  Ei Shigematsu; Yuichiro Ando; Ryo Ohshima; Sergey Dushenko; Yukio Higuchi; Teruya Shinjo; Hans Jürgen von Bardeleben; Masashi Shiraishi

  Applied Physics Express, 01 May 2016, Peer-reviewed, Lead author

  

Awards

• 03 Jul. 2017

  平成29年度工学研究科馬詰研究奨励賞(京都大学大学院工学研究科)
• 17 Nov. 2017

  平成29年度第2回講演会ポスター賞(優秀賞)(公益財団法人応用物理学会関西支部)
• 23 Jun. 2016

  平成28年度原島博学術奨励賞(電気電子情報学術振興財団)

External funds: Kakenhi

• Realization of novel devices with inductive ac spin current

  Grant-in-Aid for Early-Career Scientists

  Basic Section 21060:Electron device and electronic equipment-related

  Kyoto University

  重松 英

  From 01 Apr. 2022, To 31 Mar. 2023, Discontinued

  スピントロニクス;強磁性共鳴;高周波測定

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K14301/
• Investigation of 3C-SiC as a novel spintronic compound semiconductor

  Grant-in-Aid for Research Activity Start-up

  0302:Electrical and electronic engineering and related fields

  Kyoto University

  Ei Shigematsu

  From 11 Sep. 2020, To 31 Mar. 2023, Project Closed

  スピントロニクス;半導体;微細加工;化合物半導体

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K22413/
• Organic quantum platform based on covalent bond between spin-functional polymer and diamond

  Grant-in-Aid for Scientific Research (B)

  Basic Section 21060:Electron device and electronic equipment-related

  Kyoto University

  重松 英

  From 01 Apr. 2024, To 31 Mar. 2027, Granted

  量子デバイス;ダイヤモンド;電子スピントロニクス

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24K00945/

Education

Teaching subject(s)

• From 01 Apr. 2022, To 31 Mar. 2023

  Practice of Electrical and Electronic Engineering

  6201, Spring, Faculty of Engineering, 2
• From Apr. 2021, To Mar. 2022

  Practice of Electrical and Electronic Engineering

  Spring, 工学部

Part-time lecturer

• From 01 Apr. 2024, To 31 Mar. 2025

  先端化学実験Ⅰ・Ⅱ（先端化学）

  通年１４４時間 , 京都大学, 工学部