• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of spin-photon conversion device by ultra high quality epitaxial growth technology

Research Project

Project/Area Number 19H02181
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Iba Satoshi  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (90647059)

Co-Investigator(Kenkyū-buntansha) 大野 裕三  筑波大学, 数理物質系, 教授 (00282012)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Keywords電子スピン / レーザ / GaAs / スピン緩和 / 円偏光 / 量子井戸 / スピン / 半導体 / 結晶成長
Outline of Research at the Start

電子スピンからフォトンへの変換機構を利用した半導体レーザ「スピンレーザ」は円偏光発振を可能とする等、従来レーザにはない特徴を有するため次世代光源として期待が大きい。しかしながら、既報では低温においても低い円偏光発振特性であり、電流注入駆動による実用的スピンレーザは未だ実現されていない。これはレーザ活性層のスピン特性やスピン注入電極の界面品質の低さが原因であると考えられる。そこで申請者らの超高品質エピタキシャル成長技術と新規レーザ構造の導入により、室温で動作する電流注入型スピンレーザの実現に挑む。

Outline of Final Research Achievements

We have developed elemental technologies towards the realization of a novel semiconductor laser "spin laser" that oscillates with circularly polarized light by utilizing an electron spin-to-photon conversion mechanism, and have achieved the following results. (i) We proposed a superlattice structure consisting of (110)-oriented tunnel-coupled quantum wells as a new spin transport layer, and demonstrated a long spin lifetime in the structure. (ii) We established a high-quality crystal growth technique for (110)-oriented InGaAs/AlGaAs quantum well active layers. (iii) Spin injection electrodes consisting of a magnetic metal/tunnel barrier layer were formed on the (110)-oriented LED structure, and electrical spin injection into the LED active layer was successfully achieved.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発したスピンレーザの基盤技術を基に、今後、高性能なスピンレーザが実現され、光通信やセンシングなど様々な領域でスピンレーザが次世代光源として利活用されることが期待される。また、(110)面超格子構造におけるスピン寿命の構造依存性などスピン物性を初めて明らかにすることもでき、学術的にも興味深い知見を得ることができた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2021 2020 2019

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

  • [Journal Article] Impacts of Crystal Quality on Carrier Recombination and Spin Dynamics in (110)-Oriented GaAs/AlGaAs Multiple Quantum Wells at Room Temperature2021

    • Author(s)
      Iba Satoshi、Okamoto Ryogo、Obu Koki、Obata Yuma、Ohno Yuzo
    • Journal Title

      Micromachines

      Volume: 12 Issue: 9 Pages: 1112-1112

    • DOI

      10.3390/mi12091112

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Room-temperature spin relaxation in a (110)-oriented GaAs/AlGaAs superlattice with tunnel-coupled quantum wells2020

    • Author(s)
      Ohno Yuzo、Iba Satoshi、Okamoto Ryogo、Obata Yuma、Obu Kouki、Domingez Jonathan Johan Pascual、Saito Hidekazu
    • Journal Title

      Applied Physics Express

      Volume: 13 Issue: 12 Pages: 123003-123003

    • DOI

      10.35848/1882-0786/abbf66

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Spin relaxation in (110) GaAs superlattices with tunnel-coupled quantum wells for both lateral and vertical spin transport2021

    • Author(s)
      揖場 聡、大野 裕三
    • Organizer
      SPIE Optics and Photonics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 室温で長いキャリア寿命を有する(110)歪InGaAs量子井戸のMBE成長2021

    • Author(s)
      揖場 聡、大野 裕三
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高品質(110)歪InGaAs/AlGaAs量子井戸のMBE成長2021

    • Author(s)
      揖場 聡、大野 裕三
    • Organizer
      PASPS-26
    • Related Report
      2021 Annual Research Report
  • [Presentation] (110)GaAs超格子構造における室温スピン緩和時間2021

    • Author(s)
      Iba Satoshi、Okamoto Ryogo、Obata Yuma、Obu Kouki、Domingez Jonathan Johan Pascual、Saito Hidekazu、Ohno Yuzo
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Recent progress on crystal growth of high-quality (110)GaAs-based quantum wells for spin laser2020

    • Author(s)
      Iba Satoshi、Saito Hidekazu、Ohno Yuzo
    • Organizer
      SPIE Optics and Photonics 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] GaAs/Al0.3Ga0.7As (110)超格子におけるスピン緩和2020

    • Author(s)
      大野裕三, 岡本亮吾,小畑優真,大部公暉,PASCUAL DOMINGUEZ JONATHAN JOHAN, 揖場 聡,齋藤秀和
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] (110)GaAs/AlGaAs量子井戸の高温MBE成長2020

    • Author(s)
      揖場 聡,岡本亮吾, 齋藤秀和, 大野裕三
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Spin dynamics in GaAs/AlGaAs superlattice2019

    • Author(s)
      Y. Ohno, R. Okamoto, Y. Obata, K. Obu, S. Iba, S. Saito
    • Organizer
      JSPS/EPSRC/CNRS Core-to-core Seminar
    • Related Report
      2019 Annual Research Report
    • Invited

URL: 

Published: 2019-04-18   Modified: 2024-12-25  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi