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

Theory of band engineering on van der Waals heterostructures of atomically thin materials

Research Project

Project/Area Number 20K03844
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

Kariyado Toshikaze  国立研究開発法人物質・材料研究機構, ナノアーキテクトニクス材料研究センター, 主任研究員 (60711281)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords原子層物質 / 人工積層系 / 物質設計 / バンドエンジニアリング / バレートロニクス / 超構造 / 電子状態制御 / 第一原理計算 / 電子相関 / トポロジー
Outline of Research at the Start

炭素原子のハニカム格子ネットワークであるグラフェンをはじめとする二次元原子層物質は基礎学理の探究・デバイス応用両方の観点から期待を集めている.本研究は,二次元物質の巧みな積層構造の人工的な実現により電子の振る舞いを制御することに関する理論的研究である.電子状態制御の基礎理論を確立することで新奇物質相の探索やデバイス応用への道を開き,またそれをふまえた上で具体的な物質設計の指針も提案することが目的である.

Outline of Final Research Achievements

In this project, artificial stacked systems of atomically thin materials are theoretically studied focusing on designs of electronic band structures. As a result, the project leads to a proposal for stacking designs of new materials. For instance, it is theoretically demonstrated that a graphene derivative BC3 with a honeycomb structure leads to dimensionality control of its electronic band structure and has a potential for manipulating valley degrees of freedom, which are extra degrees of freedom of electron over charges and spins, upon making twisted bilayers. Through this project, modeling and analyzing methods for artificially stacked systems are elaborated, which accelerates further studies in relevant fields.

Academic Significance and Societal Importance of the Research Achievements

電子のバンド構造をデザインすることは固体電子の運動の制御につながり、ひいては特異な量子状態を実現することや新規デバイスの開発にも発展し得る。本研究で扱った人工積層系は積層する物質の組み合わせや積層方法の多彩さを活かした電子状態制御が期待されている分野であり、本研究の成果であるところの新物質の提案は関連研究を推進させることができる。2次元物質元来の薄さからくる集積可能性と多彩さを組み合わせることで低消費電力な新規デバイス応用に結びつけることが期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Int'l Joint Research] Harvard University(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Harvard University(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Harvard University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Twisted bilayer BC3: Valley interlocked anisotropic flat bands2023

    • Author(s)
      Toshikaze Kariyado
    • Journal Title

      Physical Review B

      Volume: 107 Issue: 8

    • DOI

      10.1103/physrevb.107.085127

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Disentangling Orbital Magnetic Susceptibility with Wannier Functions2021

    • Author(s)
      Toshikaze Kariyado, Hiroyasu Matsuura, and Ogata Masao
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 12 Pages: 124708-124708

    • DOI

      10.7566/jpsj.90.124708

    • NAID

      210000159479

    • Related Report
      2021 Research-status Report
  • [Journal Article] Effective continuum model of twisted bilayer GeSe and origin of the emerging one-dimensional mode2021

    • Author(s)
      Fujimoto Manato、Kariyado Toshikaze
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 12 Pages: 1-9

    • DOI

      10.1103/physrevb.104.125427

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Band Engineering and Possible Exotic Phases in Twisted Bilayer BC32024

    • Author(s)
      Toshikaze Kariyado
    • Organizer
      CEMS Symposium on "Emergent Quantum Materials"
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparative study of twisted bilayer BC3 and C3N2024

    • Author(s)
      Toshikaze Kariyado and Ayako Nakata
    • Organizer
      American Physical Society March Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] グラフェンナノフレークにおけるエッジ修飾とスピン状態2024

    • Author(s)
      苅宿俊風
    • Organizer
      日本物理学会春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] pi-flux とトポロジカル結晶絶縁体のコーナー状態2023

    • Author(s)
      苅宿俊風
    • Organizer
      日本物理学会年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Valley physics in twisted bilayer BC32023

    • Author(s)
      Toshikaze Kariyado
    • Organizer
      American Physical Society March Meeting 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spin-valley coupling in the strongly correlated limit of twisted bilayer BC32022

    • Author(s)
      Toshikaze Kariyado
    • Organizer
      Novel Quantum States in Condensed Matter
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 角度非整合二層BC3の電子状態2022

    • Author(s)
      苅宿俊風
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Valley dependent band engineering in twisted bilayer BC32022

    • Author(s)
      Toshikaze Kariyado, Ashvin Vishwanath
    • Organizer
      29th International Conference on Low Temperature Physics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Symmetry-Based Constraints on Interlayer Tunneling in Generic Twisted Bilayers: Theory and Implication for Band Flattening2021

    • Author(s)
      Toshikaze Kariyado and Ashvin Vishwanath
    • Organizer
      24th International Conference on Electronic Properties of Two-Dimensional Systems / 20th International Conference on Modulated Semiconductor Structures
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ツイスト二層GeSeにおける異方的平坦バンド2021

    • Author(s)
      藤本大仁, 苅宿俊風
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 非整合ヘテロ二層系の層間結合と対称性2021

    • Author(s)
      苅宿俊風
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi