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Characterization and control of spin dynamics by spin-resonance scanning tunneling microscopy

Research Project

Project/Area Number 19H00859
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 29:Applied condensed matter physics and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Hasegawa Yukio  東京大学, 物性研究所, 教授 (80252493)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2021: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2020: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2019: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Keywords走査トンネル顕微鏡 / スピン偏極走査トンネル顕微鏡 / 強磁性共鳴 / スピン偏極トンネリング / スピン流 / ナノサイズ磁性体 / スピン共鳴
Outline of Research at the Start

個々の磁性体・スピン単体での磁気特性評価を可能にするスピン偏極走査トンネル顕微鏡に、新たにスピン共鳴・強磁性共鳴の信号を検出する機構を導入することによって、緩和過程などスピン・磁化のダイナミクスを個々のナノ磁性体に対して測定・解明し、さらにはその振る舞いを制御することを目的とする。

Outline of Final Research Achievements

In order to realize ferromagnetic resonance using a scanning tunneling microscope, we have introduced microwaves into existing equipment and have succeeded in detecting high-frequency waves at the probe-sample gap and in maintaining constant intensity during the sweep of the frequency by feedback control. We have also carefully examined the sample conditions required for ferromagnetic resonance based on numerical simulations, and found that systems with low magnetic anisotropy are suitable for our experimental conditions. As a system with low magnetic anisotropy, we focused on van der Waals magnets and succeeded in fabricating monolayer films of van der Waals magnets. We have also started development of spin-polarized potentiometry to detect resonance by spin current detection instead of spin polarization by the resonance, and confirmed that it works under ultrahigh vacuum and at low temperatures.

Academic Significance and Societal Importance of the Research Achievements

個々の原子やナノ磁性体のスピン・磁化情報のダイナミクスを検出することは、これまでにない技術であり、その観測は学術的意義が極めて高いと言える。走査トンネル顕微鏡による原子構造・電子状態、さらにはスピン偏極走査トンネル顕微鏡による静的な磁化・スピン情報と組み合わせることによって、強力な磁気分析ツールとなり得る可能性を秘めている。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (33 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (5 results) Journal Article (14 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 14 results,  Open Access: 4 results) Presentation (14 results) (of which Int'l Joint Research: 7 results,  Invited: 12 results)

  • [Int'l Joint Research] Nanyang Technological University(シンガポール)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] National Taiwan Normal University(その他の国・地域(台湾))

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Southern California(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Nanyang Technological University(シンガポール)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] National Taiwan Normal University(その他の国・地域(台湾))

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Scanning Tunneling Microscopy Data Analysis Using Sparse Modeling2022

    • Author(s)
      HAZE Masahiro、YOSHIDA Yasuo、HASEGAWA Yukio
    • Journal Title

      Vacuum and Surface Science

      Volume: 65 Issue: 2 Pages: 78-83

    • DOI

      10.1380/vss.65.78

    • NAID

      130008159244

    • ISSN
      2433-5835, 2433-5843
    • Year and Date
      2022-02-10
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical simulations for ferromagnetic resonance of nano-size island structures probed by radio-frequency scanning tunneling microscopy2022

    • Author(s)
      Sato Yudai、Haze Masahiro、Yang Hung-Hsiang、Asakawa Kanta、Takahashi Susumu、Hasegawa Yukio
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 2 Pages: 025001-025001

    • DOI

      10.35848/1347-4065/ac4556

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Superconductivity near the saddle point in the two-dimensional Rashba system Si(111)-√3×√3-(Tl,Pb)2022

    • Author(s)
      T. Machida, Y. Yoshimura, T. Nakamura, Y. Kohsaka, T. Hanaguri, C.-R. Hsing, C.-M. Wei, Y. Hasegawa, S. Hasegawa, and A. Takayama
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 6 Pages: 064507-064507

    • DOI

      10.1103/physrevb.105.064507

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multiband superconductivity in strongly hybridized 1T′-WTe2/NbSe2 heterostructures2022

    • Author(s)
      Tao Wei、Tong Zheng Jue、Das Anirban、Ho Duc-Quan、Sato Yudai、Haze Masahiro、Jia Junxiang、Que Yande、Bussolotti Fabio、Goh K. E. Johnson、Wang BaoKai、Lin Hsin、Bansil Arun、Mukherjee Shantanu、Hasegawa Yukio、Weber Bent
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 9 Pages: 0945121-14

    • DOI

      10.1103/physrevb.105.094512

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enhanced critical magnetic field for monoatomic-layer superconductor by Josephson junction steps2021

    • Author(s)
      Oguro Fumikazu、Sato Yudai、Asakawa Kanta、Haze Masahiro、Hasegawa Yukio
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 8 Pages: 0854161-7

    • DOI

      10.1103/physrevb.103.085416

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Robust perpendicular magnetization of Co nanomagnets against alloy composition2021

    • Author(s)
      Yang Hung-Hsiang、Hsu Chuan-Che、Lin Wen-Chin、Hasegawa Yukio
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 3 Pages: 0354221-7

    • DOI

      10.1103/physrevb.104.035422

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reduction in magnetic coercivity of Co nanomagnets by Fe alloying2021

    • Author(s)
      Yang Hung-Hsiang、Hsu Chuan-Che、Asakawa Kanta、Lin Wen-Chin、Hasegawa Yukio
    • Journal Title

      Nanoscale

      Volume: 13 Issue: 39 Pages: 16719-16725

    • DOI

      10.1039/d1nr04862g

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electrical Conductivity Across Line Defects on the Si(111)-7×7 Surface2020

    • Author(s)
      浜田 雅之, 長谷川 幸雄
    • Journal Title

      Vacuum and Surface Science

      Volume: 63 Issue: 8 Pages: 431-436

    • DOI

      10.1380/vss.63.431

    • NAID

      130007886639

    • ISSN
      2433-5835, 2433-5843
    • Year and Date
      2020-08-10
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical calculation of the potential distribution on the Si(111)-7 × 7 surface for scanning tunneling potentiometry2020

    • Author(s)
      Masayuki Hamada, Hung-Hsiang Yang and Yukio Hasegawa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SN Pages: SN1016-SN1016

    • DOI

      10.35848/1347-4065/ab9c40

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bulk ferromagnetic tips for spin-polarized scanning tunneling microscopy2019

    • Author(s)
      Haze Masahiro、Yang Hung-Hsiang、Asakawa Kanta、Watanabe Nobuyuki、Yamamoto Ryosuke、Yoshida Yasuo、Hasegawa Yukio
    • Journal Title

      Review of Scientific Instruments

      Volume: 90 Issue: 1 Pages: 0137041-5

    • DOI

      10.1063/1.5063759

    • NAID

      120006607263

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of one-dimensional defects in the electrical transport through Si(111) - 7×7 surface states2019

    • Author(s)
      Hamada Masayuki, Hasegawa Yukio
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 12 Pages: 1254021-5

    • DOI

      10.1103/physrevb.99.125402

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Defect-induced electronic structures on SnSe surface2019

    • Author(s)
      Kanta Asakawa, Fumikazu Oguro, Yasuo Yoshida, Hideaki Sakai, Noriaki Hanasaki, Yukio Hasegawa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SI Pages: SIIA06-SIIA06

    • DOI

      10.7567/1347-4065/ab147d

    • NAID

      210000156432

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Scanning tunneling microscopy on cleaved Mn 3Sn(0001) surface2019

    • Author(s)
      Hung-Hsiang Yang, Chi-Cheng Lee, Yasuo Yoshida, Muhammad Ikhlas, Takahiro Tomita, Nugroho Agung Agustinus, Taisuke Ozaki, Satoru Nakatsuji, Yukio Hasegawa
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 9677-9677

    • DOI

      10.1038/s41598-019-45958-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 走査トンネル顕微鏡による軌道秩序の直接観察:物質表面に現れる新たな秩序2019

    • Author(s)
      吉田靖雄、Howon Kim、Chi-Cheng Lee、長谷川幸雄
    • Journal Title

      固体物理

      Volume: 54 Pages: 19-28

    • NAID

      40022054544

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] SPM技術で探る表面物性2022

    • Author(s)
      長谷川幸雄
    • Organizer
      日本学術振興会ナノプローブテクノロジー第167委員会第100回研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 走査トンネル顕微鏡による局所電子状態分析2022

    • Author(s)
      長谷川幸雄
    • Organizer
      分析電子顕微鏡討論会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Superconductivity at Surfaces studied by Scanning Tunneling Microscopy2021

    • Author(s)
      Hasegawa, Yukio
    • Organizer
      International Meeting on Thin Film Interfaces and Composite Crystals (IMTFCS2020)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 走査トンネル顕微鏡による局所電子状態分析2021

    • Author(s)
      長谷川幸雄
    • Organizer
      分析電子顕微鏡討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] SPM技術で探る表面物性2021

    • Author(s)
      長谷川幸雄
    • Organizer
      日本学術振興会ナノプローブテクノロジー第167委員会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Role of steps on superconductor-insulator transition in mono-atomic-layer metal films grown on semiconducting substrates2021

    • Author(s)
      Yudai Sato, Masahiro Haze, Shunsuke Yoshizawa, Takashi Uchihashi and Yukio Hasegawa
    • Organizer
      The 9th International Symposium on Surface Science (ISSS-9)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Step-induced enhancement of the critical magnetic field in atomic-layer superconductors2021

    • Author(s)
      Yudai Sato, Masahiro Haze, Shunsuke Yoshizawa, Takashi Uchihashi and Yukio Hasegawa
    • Organizer
      The International Conference on Nanoscience and Technology (ICN+T 2021)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Superconductivity at Surfaces studied by Scanning Tunneling Microscopy2021

    • Author(s)
      Yukio Hasegawa
    • Organizer
      International Meeting on Thin Film Interfaces and Composite Crystals (IMTFCS2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Superconductivity at Surfaces studied by Scanning Tunneling Microscopy2020

    • Author(s)
      Yukio Hasegawa
    • Organizer
      2020 Annual Meeting of the Physical Society of Taiwan
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Roles of structural defects on vortices in atomically-thin superconductors2019

    • Author(s)
      Yukio Hasegawa
    • Organizer
      Vortex 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Real-space observation of surface orbital order by scanning tunneling microscopy2019

    • Author(s)
      Yukio Hasegawa
    • Organizer
      The 10th International Conference on Materials for Advanced Technologies
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Surface states superconductivity by scanning tunneling microscopy2019

    • Author(s)
      Yukio Hasegawa
    • Organizer
      Nano and Ultrafast Surface Sciences (NUSS) Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 走査トンネル顕微鏡に探る表面電子状態2019

    • Author(s)
      長谷川幸雄
    • Organizer
      2019 年日本表面真空学会学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Superconductivity at Surfaces studied by Scanning Tunneling Microscopy2019

    • Author(s)
      Yukio Hasegawa
    • Organizer
      47th Conference on the Physics and Chemistry of Surfaces and Interfaces
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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