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

Accurate determination of atomic positions of surface hydrogen using new RHEED method

Research Project

Project/Area Number 21H01819
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

FUKAYA Yuki  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究主幹 (40370465)

Co-Investigator(Kenkyū-buntansha) 福谷 克之  東京大学, 生産技術研究所, 教授 (10228900)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Keywords電子回折 / 水素 / 表面
Outline of Research at the Start

本研究では、新たな反射高速電子回折(RHEED)法を開発し、物質表面における水素の原子位置の高精度決定を目指している。実験では、水素の位置変化に敏感と考えられる低散乱角での回折スポット強度を観測可能な新たなRHEED検出システムを開発する。シミュレーションでは、動力学的回折理論に基づいて、水素の原子位置に敏感な実験条件を探査する。上記の実験とシミュレーションとを融合させることにより、表面水素の高精度位置決定を実現させる。

Outline of Final Research Achievements

In this study, we improved a reflection high-energy electron diffraction (RHEED) apparatus and investigated RHEED conditions sensitive to the atomic positions of hydrogen on material surfaces by intensity simulations in order to determine the atomic positions of hydrogen on material surfaces with high accuracy. The RHEED apparatus improved make it possible to measure rocking curves and azimuthal plots from surfaces at low temperatures. Under the specific conditions found by intensity simulations, rocking curves and azimuthal plots were measured for hydrogen-adsorbed Ni(111) and Pd(001) surfaces. In particular, a definite change in the intensities due to the hydrogen adsorption was obtained at a few degrees off from the symmetric azimuth. Consequently, we found that through the combined use of the advanced RHEED apparatus and intensity simulations, RHEED technique is useful for the determination of the atomic positions of hydrogen on material surfaces.

Academic Significance and Societal Importance of the Research Achievements

物質表面における水素原子の吸着・拡散について理解は、基礎・応用の両面からその重要性が認識されているが、いまだに不明な点が多い。これは、物質表面上の水素の位置が実験的に特定困難であることによる。本研究成果により、物質表面における水素の位置決定及び水素の振る舞いの理解が促進し、クリーンなエネルギー媒体として重要な水素の新たな利活用への展開も期待される。

Report

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

    (10 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 2 results) Book (1 results)

  • [Journal Article] Finding RHEED conditions sensitive to hydrogen position on Pd(100)2022

    • Author(s)
      Kawamura T.、Fukaya Y.、Fukutani K.
    • Journal Title

      Surface Science

      Volume: 722 Pages: 122098-122098

    • DOI

      10.1016/j.susc.2022.122098

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Environmental effects on layer-dependent dynamics of Dirac fermions in quasicrystalline bilayer graphene2022

    • Author(s)
      Y. Zhao, T. Suzuki, T. Iimori, H.-W. Kim, J. R. Ahn, M. Horio, Y. Sato, Y. Fukaya, T. Kanai, K. Okazaki, S. Shin, S. Tanaka, F. Komori, H. Fukidome and I. Matsuda
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 11 Pages: 1-8

    • DOI

      10.1103/physrevb.105.115304

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Atomic arrangements of quasicrystal bilayer graphene: Interlayer distance expansion2021

    • Author(s)
      Yuki Fukaya, Yuhao Zhao, Hyun Woo Kim, Joung Real Ahn, Hirokazu Fukidome, Iwao Matsuda
    • Journal Title

      Phys. Rev. B

      Volume: 104 Issue: 18

    • DOI

      10.1103/physrevb.104.l180202

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 反射高速電子回折法を用いた表面直下の水素位置解析精度2023

    • Author(s)
      川村隆明,小倉正平,小澤孝拓,深谷有喜,福谷克之
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A feasibility study of RHEED as a method of subsurface hydrogen structure analysis2023

    • Author(s)
      T. Kawamura, S. Ogura, Y. Fukaya, T. Ozawa, and K. Fukutani
    • Organizer
      2023年日本表面真空学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] RHEED for Retrieval of Hydrogen Position on Metal Surface2022

    • Author(s)
      T. Kawamura, Y. Fukaya, and K. Fukutani
    • Organizer
      The 22nd International Vacuum Congress (IVC-22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RHEEDによる2×2-C2H2 -Ni(111)の構造決定精度2022

    • Author(s)
      川村隆明,小倉正平,深谷有喜,福谷克之
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 金属表面上の水素位置に敏感なRHEED回折条件2021

    • Author(s)
      川村隆明,深谷有喜,福谷克之
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RHEED intensity analysis of H on metal surfaces by enhancing H contribution2021

    • Author(s)
      T. Kawamura, Y. Fukaya, and K. Fukutani
    • Organizer
      The 9th International Symposium on Surface Science -Toward Sustainable Development- (ISSS-9)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Book] 図説 表面分析ハンドブック2021

    • Author(s)
      日本表面真空学会
    • Total Pages
      576
    • Publisher
      朝倉書店
    • ISBN
      9784254201703
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi