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Development of angle-resolved tunneling spectroscopy down to the micro Kelvin range

Research Project

Project/Area Number 19K21845
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 13:Condensed matter physics and related fields
Research InstitutionKanazawa University

Principal Investigator

Yoshida Yasuo  金沢大学, 数物科学系, 准教授 (10589790)

Co-Investigator(Kenkyū-buntansha) 岡田 佳憲  沖縄科学技術大学院大学, 量子物質科学ユニット, 准教授 (00707656)
松本 宏一  金沢大学, 数物科学系, 教授 (10219496)
辻井 宏之  金沢大学, 学校教育系, 教授 (10392036)
阿部 聡  金沢大学, 数物科学系, 教授 (60251914)
島村 一利  金沢大学, 総合技術部(理工), 技術職員 (80869991)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords角度分解測定 / 超伝導 / 磁性 / 強磁場 / 電気抵抗 / 非従来型超伝導 / トンネル分光測定 / 超低温 / 超伝導対称性 / トンネル分光
Outline of Research at the Start

超伝導転移温度が極端に低く、その超伝導発現機構が明らかになっていない、エキゾチックな超伝導体上に、薄膜技術によってトンネル接合を作成し、マイクロケルビン領域までの超低温における角度分解トンネル分光を行い、その超伝導対称性を明らかにすることを目的としている。対称性を明らかにすることを通して、その超伝導発現機構の解明のための糸口を得ることが最終的な目標である。

Outline of Final Research Achievements

In order to investigate the gap symmetry of superconductors with low superconducting transition temperatures, we have developed a magnetic field angle-resolved measurement system that can operate at very low temperatures (down to the micro K region). A piezoelectric rotator was used as the rotation mechanism to rotate the sample in a magnetic field, and test measurements were performed from room temperature to 2 K and from zero to 14 T in magnetic fields. Measurements at room temperature were performed using a cobalt thin film that exhibits the in-plane Hall effect, and smooth 360-degree magnetic field angle-resolved transport measurements could be performed with high accuracy in a short time of less than 20 minutes. The angular dependence of the critical magnetic field of NbSe2 at 4 K was also in good agreement with previous studies.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した装置は、測定の精度を向上させ、低温まで温度範囲を広げることで、非従来型超伝導体の超伝導ギャップの対称性や鉄系超伝導体などで観察されている量子液晶状態を効率的に調べることができるようになると考えられる。また、角度分解能が従来の回転機構に比べて高いため、より詳細な角度依存の情報を得ることが期待される。更に、様々な測定に応用できるよう汎用的に設計されており、今回テストを行った輸送特性やトンネル分光の測定だけでなく、熱測定や磁気歪みなどの測定にも応用することができる。

Report

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

    (22 results)

All 2022 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Funded Workshop (1 results)

  • [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
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Precise magnetization measurements down to 500 mK using a miniature <sup>3</sup>He cryostat and a closed-cycle <sup>3</sup>He gas handling system installed in a SQUID magnetometer without continuous-cooling functionality2022

    • Author(s)
      Shimamura Kazutoshi、Wajima Hiroki、Makino Hayato、Abe Satoshi、Haga Yoshinori、Sato Yoshiaki、Kawae Tatsuya、Yoshida Yasuo
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 5 Pages: 056502-056502

    • DOI

      10.35848/1347-4065/ac5bb0

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 東京医科歯科大学におけるPBL教育の実践2021

    • Author(s)
      檜枝 光憲、池田 暁彦、吉田 靖雄
    • Journal Title

      Physics Education in University

      Volume: 27 Issue: 3 Pages: 163-166

    • DOI

      10.11316/peu.27.3_163

    • NAID

      130008129507

    • ISSN
      1340-993X, 2432-1710
    • Year and Date
      2021-11-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 遠隔授業として実施可能な物理学実験テーマと指導方法の開発2021

    • Author(s)
      大橋 政司、吉田 靖雄
    • Journal Title

      Physics Education in University

      Volume: 27 Issue: 1 Pages: 65-67

    • DOI

      10.11316/peu.27.1_65

    • NAID

      130008025042

    • ISSN
      1340-993X, 2432-1710
    • Year and Date
      2021-03-15
    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [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(10) Pages: 513-522

    • NAID

      40022054544

    • Related Report
      2019 Research-status 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 Research-status 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 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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 Research-status Report
    • Peer Reviewed
  • [Presentation] MPMS用の小型3He冷凍機を用いたS=1/2 擬1次元はしご反強磁性体の磁化測定2021

    • Author(s)
      島村一利, 牧野隼士, 山本孟, 木村宏之, 坂倉輝俊, 吉田靖雄
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 2次元超伝導体NbTe2のTC増大の原因究明2021

    • Author(s)
      牧野隼士, 岡本博之, 島村一利, 吉田靖雄
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ピエゾ駆動型回転機構を用いた磁場角度分解測定装置の開発2021

    • Author(s)
      輪島裕樹, 島村一利, 阿部聡, 吉田靖雄
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気抵抗同時測定可能な極低温・強磁場超高真空STMの開発2021

    • Author(s)
      稲垣航, ErlinaTikMan, 傳田直起, Tim Schweizer, 島村一利, 吉田靖雄
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] MPMSに導入する3He冷凍機を用いた磁化測定技術2021

    • Author(s)
      島村 一利、輪島 裕樹、阿部 聡、河江 達也、吉田 靖雄
    • Organizer
      第82回 応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Spatially-modulated superconductivity due to the interplay between electronic nematicity and surface structure in FeSexTe1-x at the nematic quantum critical point2021

    • Author(s)
      Y. Yoshida, H.-H. Yang, K. Terao, T. Kashiwagi, K. Kadowaki, Y. Hasegawa
    • Organizer
      The 9th International Symposium on Surface Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of an in-situ Electrical Transport Measurement System Combined with UHV Scanning Tunneling Microscope at Low Temperatures in High-Magnetic Fields2021

    • Author(s)
      Erlina Tik Man, Wataru Inagaki, Naoki Denda, Tim Schweizer, Kazutoshi Shimamura, Yasuo Yoshida
    • Organizer
      The 9th International Symposium on Surface Science
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ピエゾ駆動型回転機構を用いた磁場角度分解測定装置の開発と 2 次元超伝導体 NbSe2 の角度分解電気抵抗測定2021

    • Author(s)
      輪島裕樹,牧野隼人,島村一利,阿部聡,吉田靖雄
    • Organizer
      2021年度日本物理学会北陸支部定例学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気抵抗同時測定可能な極低温・強磁場・超高真空STMの開発と2次元超伝導体NbSe2 の電気抵抗測定2021

    • Author(s)
      稲垣航, Erlina Tik Man, 森山曉栄, 傳田直起, Tim Schweizer, 島村一利, 吉田靖雄
    • Organizer
      応用物理学会 北陸・信越支部 学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 遠隔授業として実施可能な物理学実験テーマと指導方法の開発2020

    • Author(s)
      大橋政司, 安達悠人, 小林慶士郎, 流雅樹, 吉田靖雄
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Direct observation of surface-induced orbital order in a strongly-correlated superconductor revealed by gap-dependent scanning tunneling microscopy2019

    • Author(s)
      Yasuo Yoshida
    • Organizer
      ELECTRON CORRELATION IN SUPERCONDUCTORS AND NANOSTRUCTURES
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Low temperature scanning tunneling microscopy and spectroscopy study of FeSexTe1-x at the nematic quantum critical point2019

    • Author(s)
      Yasuo Yoshida
    • Organizer
      Superstripes 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 低温走査トンネル顕微鏡を用いた先端計測による強相関電子系の研究; Advanced scanning tunneling microscopy techniques on strongly correlated electron systems2019

    • Author(s)
      吉田靖雄
    • Organizer
      分子研コロキウム
    • Related Report
      2019 Research-status Report
    • Invited
  • [Funded Workshop] the International Symposium on Frontier of Materials Science - Advanced Quantum Measurement and Theoretical/Computational Approach2022

    • Related Report
      2021 Annual Research Report

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Published: 2019-07-04   Modified: 2023-01-30  

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