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Investigation of 3C-SiC as a novel spintronic compound semiconductor

Research Project

Project/Area Number 20K22413
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0302:Electrical and electronic engineering and related fields
Research InstitutionKyoto University

Principal Investigator

Shigematsu Ei  京都大学, 工学研究科, 助教 (00879265)

Project Period (FY) 2020-09-11 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsスピントロニクス / 半導体 / 微細加工 / 化合物半導体
Outline of Research at the Start

スピン角運動量の流れであるスピン流を積極的に活用することで高速動作や省エネルギー動作を可能にするデバイスの実現を目指している半導体スピントロニクス領域では,新規材料の探索が盛んである.この研究ではケイ素やヒ化ガリウムといった先行研究例からは単純にスピン流物性を予測できない炭化ケイ素(3C-SiC)に着目をして,そのスピン流伝導物性や電気信号への変換性能を解明することを目的とする.これにより従来と異なる新たな方向性により幅引く半導体スピントロニクス材料を開発できることが期待される.

Outline of Final Research Achievements

In this study, we focused on silicon carbide as a spintronic material because it has properties of both silicon and gallium arsenide, which are currently major research targets in the field of semiconductor spintronics. Our goal is to clarify its spin transport properties. In addition to the results of room temperature spin transport using the DC spin pumping method with the n-type SiC, we had already obtained, we measured and verified the spin current conversion properties using the AC spin current generation and detection method. Furthermore, forwards practical device applications, we developed a simple method for calculating and simulating the spin transport and generation characteristics of nano-scale structures, which we described in the main authored paper.

Academic Significance and Societal Importance of the Research Achievements

この研究は半導体スピントロニクスの研究領域において主要な材料であるシリコンやヒ化ガリウムについての先行研究に立脚してあらたな材料分野を開拓することを企図したテーマである.具体的には以上の2つの材料について共通する性質をあわせ持つ炭化ケイ素に着目して,スピン流注入実験を行いスピントロニクス物性を解明することを目指した.このような実証実験を実現するためには半導体の微細構造におけるスピン流のふるまいを予め計算することが不可欠であり,その支配方程式であるスピン拡散方程式を実デバイス構造で演算する手法の構築に成功した.新規半導体材料を用いた実証実験を進めるための地歩を固めることができた.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Walther-Meissner-Institut/Technische Universitat Muenchen/MCQST(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Robinson Research Institute/The MacDiarmid Institute(ニュージーランド)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Maryland/NIST(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Full calculation of inter-conversion between charge, spin, and heat current using a common partial differential equation platform2022

    • Author(s)
      Shigematsu Ei、Tamura Eiiti、Ohshima Ryo、Ando Yuichiro、Shiraishi Masashi
    • Journal Title

      Journal of Applied Physics

      Volume: 131 Issue: 24 Pages: 243903-243903

    • DOI

      10.1063/5.0088343

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of adjacent metal films on magnon propagation in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Fe</mml:mi><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>2022

    • Author(s)
      Mae Sotaro、Ohshima Ryo、Shigematsu Ei、Ando Yuichiro、Shinjo Teruya、Shiraishi Masashi
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 10 Pages: 104415-104415

    • DOI

      10.1103/physrevb.105.104415

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Current-induced out-of-plane torques in a single permalloy layer with lateral structural asymmetry2022

    • Author(s)
      Aoki Motomi、Shigematsu Ei、Ohshima Ryo、Shinjo Teruya、Shiraishi Masashi、Ando Yuichiro
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 14 Pages: 144407-144407

    • DOI

      10.1103/physrevb.105.144407

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Coexistence of low-frequency spin-torque ferromagnetic resonance and unidirectional spin Hall magnetoresistance2021

    • Author(s)
      Aoki Motomi、Shigematsu Ei、Ohshima Ryo、Shinjo Teruya、Shiraishi Masashi、Ando Yuichiro
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 9 Pages: 1-9

    • DOI

      10.1103/physrevb.104.094401

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Giant spin Hall angle in the Heusler alloy Weyl ferromagnet Co2MnGa2021

    • Author(s)
      L. Leiva, S. Granville, Y. Zhang, S. Dushenko, E. Shigematsu, T. Shinjo, R. Ohshima, Y. Ando, and M. Shiraishi
    • Journal Title

      Physical Review B (Letter)

      Volume: 103 Issue: 4 Pages: 1-7

    • DOI

      10.1103/physrevb.103.l041114

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enhancement of low-frequency spin-orbit-torque ferromagnetic resonance signals by frequency tuning observed in Pt/Py, Pt/Co, and Pt/Fe bilayers2021

    • Author(s)
      Motomi Aoki, Ei Shigematsu, Masayuki Matsushima, Ryo Ohshima, Syuta Honda, Teruya Shinjo, Masashi Shiraishi, and Yuichiro Ando
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 2 Pages: 025206-025206

    • DOI

      10.1063/9.0000066

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spin to charge conversion in Si/Cu/ferromagnet systems investigated by ac inductive measurements2021

    • Author(s)
      Ei Shigematsu, Lukas Liensberger, Mathias Weiler, Ryo Ohshima, Yuichiro Ando, Teruya Shinjo, Hans Huebl, and Masashi Shiraishi
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 9 Pages: 094430-094430

    • DOI

      10.1103/physrevb.103.094430

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In-plane spin-orbit torque magnetization switching and its detection using the spin rectification effect at subgigahertz frequencies2020

    • Author(s)
      Motomi Aoki, Ei Shigematsu, Masayuki Matsushima, Ryo Ohshima, Syuta Honda, Teruya Shinjo, Masashi Shiraishi, and Yuichiro Ando
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 17 Pages: 174442-174442

    • DOI

      10.1103/physrevb.102.174442

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Spin rectification signal induced by the unidirectional spin Hall magnetoresistance2021

    • Author(s)
      Motomi Aoki、Yuichiro Ando、Ei Shigematsu、Ryo Ohshima、Teruya Shinjo、Masashi Shiraishi
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of magnon absorption from Y3Fe5O12 into metals2021

    • Author(s)
      Sotaro Mae、Ei Shigematsu、Ryo Ohshima、Yuichiro Ando、Teruya Shinjo、Masashi Shiraishi
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Current-induced out-of-plane torque in a single permalloy layer controlled by geometry2021

    • Author(s)
      青木 基、安藤 裕一郎、重松 英、大島 諒、新庄 輝也、白石 誠司
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Spin to Charge Conversion of ac Spin Current in Si Detected by Inductive Measurements2020

    • Author(s)
      E. Shigematsu, L. Liensberger, M. Weiler, R. Ohshima, Y. Ando, T. Shinjo, H. Huebl, and M. Shiraishi
    • Organizer
      65th Annual Conference on Magnetism and Magnetic Materials
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-09-29   Modified: 2024-01-30  

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