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Exploration of localized spin control in SiC based on electrical spin injection

Research Project

Project/Area Number 21K20502
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
Research InstitutionKyoto University

Principal Investigator

Morioka Naoya  京都大学, 化学研究所, 准教授 (90905952)

Project Period (FY) 2021-08-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsスピントロニクス / スピン注入 / 炭化ケイ素 / シリコン空孔 / 核スピン / 磁気共鳴 / SiC / 点欠陥 / 電子スピン / ナノ構造 / 点欠陥スピン / 半導体
Outline of Research at the Start

化合物半導体である炭化ケイ素(SiC)は電子デバイス材料として注目を集めているが、その優れた半導体特性と、内包する欠陥の電子スピンや核スピンの機能とを融合した、新規スピントロニクスデバイスへの発展の可能性を秘めた材料である。本研究では、SiC表面の半導体物性を制御してSiCへの電気的スピン注入を目指すとともに、偏極した伝導電子スピンとSiC内部の局在スピン系との相互作用の研究を行うことで、新機能デバイスへと展開する。

Outline of Final Research Achievements

In this study, we aim to control localized spins in silicon carbide (SiC), such as electron spins of point defects or nuclear spins of the matrix material, by means of conduction spins of free electrons. As a fundamental study to realize this goal, we have developed a semiconductor nanofabrication process to realize electrical spin injection devices in SiC and a technique to electrically detect the localized spins in SiC. As a result, we established the elemental technology for device fabrication and succeeded in high-resolution electrical detection of electron spins of silicon vacancy defects and nuclear spins coupled with these defects in SiC at room temperature.

Academic Significance and Societal Importance of the Research Achievements

SiC中のシリコン空孔の電子スピンおよび核スピンを電気的に検出できたことで、伝導電子スピンとの相互作用を検出するための実験基盤を構築することができた。また、SiC中のシリコン空孔スピンは高感度に磁場・温度等を計測する量子センサとして注目されており、これらの高分解能検出を電気的に達成できたことは、将来的に量子技術を半導体素子として集積するための極めて重要な技術である。核スピンも量子センサの感度増強や量子メモリとして機能する重要なリソースである。今回達成した核スピンの電気的検出技術は、電子-核スピンの量子もつれを利用した集積量子デバイスの実現につながる重要な成果である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Electrical detection of nuclear spins via silicon vacancies in silicon carbide at room temperature2022

    • Author(s)
      Nishikawa Tetsuri、Morioka Naoya、Abe Hiroshi、Morishita Hiroki、Ohshima Takeshi、Mizuochi Norikazu
    • Journal Title

      Applied Physics Letters

      Volume: 121 Issue: 18 Pages: 184005-184005

    • DOI

      10.1063/5.0115928

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] 半導体SiC中点欠陥スピンの高感度な電気的検出2024

    • Author(s)
      森岡直也,西川哲理,阿部浩之,村田晃一,岡島和希, 大島武,土田秀一,水落憲和
    • Organizer
      スピントロニクス学術研究基盤と連携ネットワーク(Spin-RNJ)シンポジウム 2023年度報告会
    • Related Report
      2023 Annual Research Report
  • [Presentation] SiC中Si空孔スピンの光電流検出におけるイオン化経路の研究2024

    • Author(s)
      岡島和希, 森岡直也, 西川哲理, 阿部浩之, 大島武, 水落憲和
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Electrical detection of nuclear spins in silicon carbide using silicon vacancy quantum spins in ambient conditions2023

    • Author(s)
      Naoya Morioka, Tetsuri Nishikawa, Hiroshi Abe, Hiroki Morishita, Takeshi Ohshima, and Norikazu Mizuochi
    • Organizer
      International Conference on Silicon Carbide and Related Materials 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrical Spin Detection in Diamond and Silicon Carbide for Quantum Technologies2023

    • Author(s)
      Naoya Morioka, Hiroki Morishita, Tetsuri Nishikawa, and Norikazu Mizuochi
    • Organizer
      Quantum Technology with Defects in Semiconductors (Satellite session of The 13th International Conference on Advanced Materials and Devices)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 炭化ケイ素中のシリコン空孔量子光源2023

    • Author(s)
      森岡直也
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 炭化ケイ素中の欠陥電子スピンおよび核スピンの室温での電気的検出2023

    • Author(s)
      森岡直也、西川哲理、阿部浩之、森下弘樹、大島武、水落憲和
    • Organizer
      スピントロニクス学術研究基盤と連携ネットワーク(Spin-RNJ)シンポジウム 2022年度報告会
    • Related Report
      2022 Research-status Report
  • [Presentation] Spin-optical dynamics study and approach to quantum electronics for quantum applications of silicon vacancy in SiC2022

    • Author(s)
      Naoya Morioka, Di Liu, Tetsuri Nishikawa, Oney O. Soykal, Hiroki Morishita, Izel Gediz, Charles Babin, Rainer Stoehr, Hiroshi Abe, Takeshi Ohshima, Nguyen Tien Son, Jawad Ul-Hassan, Florian Kaiser, Joerg Wrachtrup, and Norikazu Mizuochi
    • Organizer
      The 20th International Symposium on the Physics of Semiconductors and Applications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 4H-SiC中シリコン空孔を用いた室温下での電気的核スピン検出2022

    • Author(s)
      西川哲理、森岡直也、阿部浩之、森下弘樹、大島武、水落憲和
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Room-temperature electrical detection of nuclear spins in silicon carbide2022

    • Author(s)
      Naoya Morioka, Tetsuri Nishikawa, Hiroshi Abe, Hiroki Morishita, Takeshi Ohshima, and Norikazu Mizuochi
    • Organizer
      5th International Forum on Quantum Metrology and Sensing
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2021-10-22   Modified: 2025-01-30  

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