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Spin effect in two-dimensional antiferromagnet interface

Research Project

Project/Area Number 20K14399
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionThe University of Tokyo (2021-2022)
Tohoku University (2020)

Principal Investigator

Idzuchi Hiroshi  東京大学, 大学院理学系研究科(理学部), 特任准教授 (20784507)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsスピントロニクス / 二次元物質 / 反強磁性 / 2次元物質
Outline of Research at the Start

近年のスピントロニクス研究の発展はその界面におけるスピン依存現象の重要性を明らかにした。本研究では反強磁性体の界面におけるスピン依存した効果・現象が、その素励起(反強磁性マグノン)や秩序パラメータとどのように相関するかを追及する。2次元反強磁性体の高い結晶性を利用して磁気素励起を検出する。ヘテロ界面を通じた、近接効果・波動関数の結合や、スピンホール効果を用いる。反強磁性体のスピンダイナミクスは強磁性体に比較して高速であることが主要な特徴であり、その学理解明は将来の科学技術創出の上でも重要である。

Outline of Final Research Achievements

We study antiferromagnetic phase in two dimensional material and focus on the spin effect at the interface. Particularly, higy crystalinity in two-dimensional antiferromagnet and heterointerface were used to study how excitaion (antiferromagnetic magnon) and order parameter should be correlated to the interfacial spin effect. By using electic detection method, we succeeded in detecting interfacial spin effect. Futther, we found new phenomena over the expected effect in antifferomagnetic phase and undestand it by introducing new concept. We succeeded in applying the framework to multiple materials.

Academic Significance and Societal Importance of the Research Achievements

スピントロ二クス分野において従来基幹をなしていた強磁性体と比べて、本研究で対象とした反強磁性体では、その磁化ダイナミクスのスピードが2~3桁高く、高速動作が期待できる。このような反強磁性体において、その信号を電気的に検出し、反強磁性特有の性質を明らかにできたことは、将来のスピントロニクスデバイスの原理を考究するうえで重要なものと考える。

Report

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

    (14 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (5 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] オーフス大学(デンマーク)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] パデュー大学/オークリッジ国立研究所/テネシー大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] パデュー大学/オークリッジ国立研究所(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Purdue University/Oak Ridge National Lab(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Aarhus University(デンマーク)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Modified magnetism in heterostructures of Cr<sub>2</sub>Ge<sub>2</sub>Te<sub>6</sub> and oxides2023

    • Author(s)
      Llacsahuanga Allcca A. E.、Idzuchi H.、Pan X. C.、Tanigaki K.、Chen Y. P.
    • Journal Title

      AIP Advances

      Volume: 13 Issue: 1 Pages: 015031-015031

    • DOI

      10.1063/9.0000413

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spin injection characteristics of Py/graphene/Pt by gigahertz and terahertz magnetization dynamics driven by femtosecond laser pulse2021

    • Author(s)
      H. Idzuchi, S. Iihama, M. Shimura, A. Kumatani, S. Mizukami, Y. P. Chen
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 1 Pages: 015321-015321

    • DOI

      10.1063/9.0000114

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Emergent spin-dependent interaction via the interface of quasi two-dimensional Cr2Ge2Te62022

    • Author(s)
      H. Idzuchi
    • Organizer
      International Conference on Quantum Materials and Technologies - ICQMT2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] α-RuCl3ヘテロ構造におけるスピン依存伝導: 強いスピン異方性の観測2022

    • Author(s)
      井土宏,木俣基, S. Okamoto, P. Laurell, N. Mohanta, A. Banerjee, Y. P. Chen
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] α-RuCl3ヘテロ構造におけるスピン依存輸送2021

    • Author(s)
      井土宏,木俣基,S.Okamoto, Y. P. Chen
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Wrinkle formation and its effect on the magnetic properties of Cr2Ge2Te6/NiO heterostructures2021

    • Author(s)
      A. E. Llacsahuanga Allcca, H. Idzuchi, X. C. Pan, K. Tanigaki and Y. P. Chen
    • Organizer
      APS March meeting 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Increased Curie temperature and enhanced perpendicular magneto anisotropy of Cr2Ge2Te6/NiO heterostructures2020

    • Author(s)
      H. Idzuchi, A. E. Llacsahuanga Allcca, X. C. Pan, K. Tanigaki and Y. P. Chen
    • Organizer
      MMM 2020 Virtual Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spin injection characteristics of Py/Graphene/Pt by means of THz measurement and spin pumping2020

    • Author(s)
      H. Idzuchi, S. Iihama, M. Shimura, A. Kumatani, S. Mizukami, Y. P. Chen
    • Organizer
      MMM 2020 Virtual Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks]

    • URL

      http://idzuchi.info/wp/

    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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