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Flat-band engineering using molecular manipulation with a scanning tunneling microscope

Research Project

Project/Area Number 21K18898
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 29:Applied condensed matter physics and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

YOSHIZAWA Shunsuke  国立研究開発法人物質・材料研究機構, マテリアル基盤研究センター, 主任研究員 (60583276)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords走査型トンネル顕微鏡 / 原子層 / 表面・界面 / 原子・分子操作 / 緊急地震速報 / 走査トンネル顕微鏡 / フラットバンド
Outline of Research at the Start

走査トンネル顕微鏡(STM)を使った物性制御の可能性を追求する。具体的には、原子層物質の表面に吸着させた原子・分子を、STM 探針を使って操作し、人工的な格子状に並べる。これにより原子層物質の電子状態に変調を加え、それにともなう物性の変化をトンネル分光測定から検知する。これを現実的な時間で行うために、原子・分子操作の自動化も進める。

Outline of Final Research Achievements

A scanning tunneling microscope (STM) allows us to observe the atomic-scale structure of the sample surface, as well as to move individual atoms or molecules adsorbed on the surface. Using this technique, we aimed to develop a method to control the physical properties of atomic layer materials by manipulating and arranging the atoms or molecules adsorbed on the surface. We created a program to automatically manipulate a large number of atoms or molecules, and also used density functional theory calculations to study the adsorption sites of carbon monoxide molecules on an atomic-layer indium formed on a silicon substrate. Related to the automation of STM operation, we constructed a system to avoid the influence of earthquakes during STM experiments by receiving the earthquake early warning.

Academic Significance and Societal Importance of the Research Achievements

この成果は、STMを用いた原子・分子操作の技術を向上させるものであり、当初計画の実現に向けた基盤となるものである。今後も継続して取り組んでいくことで、ナノテクノロジー分野における研究展開と応用が期待される。また、緊急地震速報を活用した地震回避システムは、STM実験の安定性を高め、より信頼性の高いデータ取得を可能にするものであり、本研究計画の枠を超えて利用価値があるものである。

Report

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

    (27 results)

All 2024 2023 2022 2021 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (20 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results) Remarks (2 results)

  • [Journal Article] Visualization of Alternating Triangular Domains of Charge Density Waves in 2H-NbSe2 by Scanning Tunneling Microscopy2024

    • Author(s)
      Shunsuke Yoshizawa, Keisuke Sagisaka, Hideaki Sakata
    • Journal Title

      Physical Review Letters

      Volume: 132 Issue: 5 Pages: 056401-056401

    • DOI

      10.1103/physrevlett.132.056401

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Earthquake Countermeasures in Scanning Tunneling Microscopy Experiments Using Earthquake Early Warning2023

    • Author(s)
      吉澤 俊介
    • Journal Title

      Vacuum and Surface Science

      Volume: 66 Issue: 1 Pages: 46-51

    • DOI

      10.1380/vss.66.46

    • ISSN
      2433-5835, 2433-5843
    • Year and Date
      2023-01-10
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Topological surface states hybridized with bulk states of Bi-doped PbSb2Te4 revealed in quasiparticle interference2023

    • Author(s)
      Hattori Yuya、Sagisaka Keisuke、Yoshizawa Shunsuke、Tokumoto Yuki、Edagawa Keiichi
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 12

    • DOI

      10.1103/physrevb.108.l121408

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental verification of band convergence in Sr and Na codoped PbTe2023

    • Author(s)
      Hattori Yuya、Yoshizawa Shunsuke、Sagisaka Keisuke、Tokumoto Yuki、Edagawa Keiichi、Konoike Takako、Uji Shinya、Terashima Taichi
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 12 Pages: 125119-125119

    • DOI

      10.1103/physrevb.108.125119

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Field-resilient superconductivity in atomic-layer crystalline materials2023

    • Author(s)
      Yoichi Higashi, Shunsuke Yoshizawa, Takashi Yanagisawa, Izumi Hase, Yasunori Mawatari, and Takashi Uchihashi
    • Journal Title

      Physical Review B

      Volume: 108 Issue: 6 Pages: 064504-064504

    • DOI

      10.1103/physrevb.108.064504

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 2H-NbSe2 電荷密度波状態の整合欠陥と位相欠陥2024

    • Author(s)
      吉澤 俊介, 鷺坂 恵介, 坂田 英明
    • Organizer
      日本物理学会 2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 極低温STMを使った電子状態イメージング2024

    • Author(s)
      吉澤 俊介
    • Organizer
      第1回表面真空若手オンラインスクール
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] シリコン表面インジウム原子層における準粒子干渉の観測とシミュレーション2024

    • Author(s)
      吉澤 俊介, 鷺坂 恵介
    • Organizer
      ISSP短期研究会「物質科学シミュレーションと先端実験のデータ連携」
    • Related Report
      2023 Annual Research Report
  • [Presentation] トポロジカル絶縁体 Bi2Se3 の実空間ランダウ準位分光2023

    • Author(s)
      吉澤 俊介, 服部 裕也, 枝川 圭一, 鷺坂 恵介
    • Organizer
      表面界面スペクトロスコピー2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Imaging the domain structure of charge density wave state in 2H-NbSe2 by scanning tunneling microscopy2023

    • Author(s)
      Shunsuke Yoshizawa
    • Organizer
      2023 Taiwan-Japan Workshop on Crystals Growth, Analysis & Calculation (TJ-CGAC)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Imaging the domain structure and topological defects of charge density waves of 2H-NbSe2 by scanning tunneling microscopy2023

    • Author(s)
      Shunsuke Yoshizawa, Keisuke Sagisaka, Hideaki Sakata
    • Organizer
      International Conference on Quantum Liquid Crystals 2023 (QLC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 極低温高磁場走査型トンネル顕微鏡によるトポロジカル絶縁体表面ランダウ準位波動関数の可視化2023

    • Author(s)
      吉澤 俊介, 服部 裕也, 枝川圭一, 鷺坂 恵介
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] トポロジカル絶縁体表面におけるランダウ軌道の実空間観測2022

    • Author(s)
      吉澤 俊介, 服部 裕也, 枝川圭一, 鷺坂 恵介
    • Organizer
      第28回 渦糸物理ワークショップ
    • Related Report
      2022 Research-status Report
  • [Presentation] Bloch state interference in atomic layer indium studied by scanning tunneling microscopy and density functional theory2022

    • Author(s)
      Shunsuke Yoshizawa
    • Organizer
      Integrated Spectroscopy for Strong Electron Correlation (ISSEC-2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 緊急地震速報を利用した STM 探針退避2022

    • Author(s)
      吉澤 俊介, 鷺坂 恵介
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] (Ba,K)Fe2As2 渦糸状態の STM 観測2022

    • Author(s)
      吉澤 俊介, 鷺坂 恵介, 山浦 一成
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 走査型トンネル顕微鏡実験における長時間測定中の地震対策2022

    • Author(s)
      吉澤 俊介, 鷺坂 恵介
    • Organizer
      日本表面真空学会 2022年度 関東支部講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 極低温走査型トンネル顕微鏡を用いた超伝導体観察2022

    • Author(s)
      吉澤俊介
    • Organizer
      NIMS先端計測シンポジウム2022
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 走査トンネル顕微鏡による 2H-NbSe2 の電荷密度波ドメイン構造の実空間観測2022

    • Author(s)
      吉澤俊介, 鷺坂恵介, 坂田英明
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Domain structure of charge density wave in 2H-NbSe2 revealed by scanning tunneling microscopy2022

    • Author(s)
      Shunsuke Yoshizawa, Keisuke Sagisaka, Hideaki Sakata
    • Organizer
      ISSP workshop "Frontier of scanning probe microscopy and related nano science"
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 表面原子層における二次元超伝導と電子散乱2021

    • Author(s)
      吉澤俊介
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] STM による 2H-NbSe2 の電荷密度波ドメインの可視化2021

    • Author(s)
      吉澤俊介, 鷺坂恵介
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] NbSe2 の電荷密度波ドメイン構造の STM 観測2021

    • Author(s)
      吉澤俊介, 鷺坂恵介, 坂田英明
    • Organizer
      ワークショップ(5)「超伝導物質、トポロジカル物質」(SCTM2021)
    • Related Report
      2021 Research-status Report
  • [Presentation] Electron Standing Waves of Si(111)-(√7×√3)-In Imaged by Scanning Tunneling Microscopy2021

    • Author(s)
      Shunsuke Yoshizawa, Keisuke Sagisaka
    • Organizer
      The 9th International Symposium on Surface Science (ISSS-9)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Imaging sub-angstrom lattice distortion of incommensurate structures using scanning tunneling microscopy2021

    • Author(s)
      Shunsuke Yoshizawa, Keisuke Sagisaka
    • Organizer
      Material Research Meeting 2021 (MRM2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 層状化合物超伝導体に電子が織りなす「鱗文様」

    • URL

      https://www.nims.go.jp/news/press/2024/02/202402260.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] Alternating Triangular Charge Density Wave ...

    • URL

      https://www.nims.go.jp/eng/news/press/2024/02/202402260.html

    • Related Report
      2023 Annual Research Report

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Published: 2021-07-13   Modified: 2025-01-30  

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