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Spin-orbit interaction in s-electron nanocluster systems enhanced by Rashba effect

Research Project

Project/Area Number 19K03738
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 InstitutionIbaraki University

Principal Investigator

Nakano Takehito  茨城大学, 理工学研究科(理学野), 准教授 (50362611)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsアルカリ金属 / ナノクラスター / スピン軌道相互作用 / クラスター / s電子 / ラシュバ効果 / 電子スピン共鳴
Outline of Research at the Start

ゼオライト結晶のナノ空間中に形成したアルカリ金属クラスター(原子集団)では,元のアルカリ金属のs電子は本来示さない強いスピン軌道相互作用が発生する.クラスターの新しい量子状態と,クラスター表面での局所的対称性の破れがその原因と考えられているが詳細は分かっていない.本研究ではアルカリ元素種とナノ空間の対称性を変えた試料を系統的に作成して電子スピン共鳴測定を詳細に行うことにより,スピン軌道相互作用増強の機構を定量的に明らかにする.

Outline of Final Research Achievements

Alkali metal (K, Rb, Cs) nanoclusters in zeolite A, a porous crystal, have been studied in detail by electron spin resonance. A complete picture of the physical quantities directly related to the spin-orbit interaction, such as the ESR linewidth and the g-value shift due to spin-lattice relaxation, has been quantitatively revealed with respect to the electron concentration dependence and the alkali element dependence. The effect of orbital degeneracy in the 1p level of the cluster is found to be very large. The heavy element effect is also very clear. The fundamental knowledge of the spin-orbit interaction in nanoclusters, which are an order of magnitude larger than atoms, is obtained.

Academic Significance and Societal Importance of the Research Achievements

原子よりも一回り大きなサイズ領域である金属ナノクラスターにおけるスピン軌道相互作用はこれまであまり詳しく調べられてこなかったが,本研究によってその基礎情報の全貌が明らかになった.また,元来は軌道角運動量を持たないs電子がナノクラスターにおいて強いスピン軌道相互作用を獲得する機構についても明らかになった.これらの知見は,ナノ構造体を構成要素とする機能性新物質の開発指針に役立つ可能性がある.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results) Presentation (16 results) (of which Int'l Joint Research: 11 results,  Invited: 5 results)

  • [Journal Article] 量子ビームの相補利用で見る配列アルカリ金属ナノクラスターの磁気秩序2021

    • Author(s)
      中野岳仁
    • Journal Title

      Colloid & Interface Communication

      Volume: 46 Pages: 13-15

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Metallic state in rubidium-loaded low-silica X zeolite2020

    • Author(s)
      P. Jeglic, T. Nakano, T. Meznarsic, D. Arcon, and M. Igarashi
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 7 Pages: 073706-073706

    • DOI

      10.7566/jpsj.89.073706

    • NAID

      40022283320

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Antiferromagnetic orderings of alkali-metal nanoclusters arrayed in sodalite crystal studied by μSR and other microscopic probes2020

    • Author(s)
      T. Nakano
    • Journal Title

      Journal of Computer Chemistry, Japan

      Volume: 19 Pages: 57-63

    • NAID

      130007992640

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Metallic State in Rubidium-Loaded Low-Silica X zeolite2020

    • Author(s)
      Peter Jeglic, Takehito Nakano, Tadej Meznarsic, Denis Arcon, Mutsuo Igarashi
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: to be published

    • NAID

      40022283320

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Mott-insulating state of alkali-metal clusters in sodalite studied by μSR2022

    • Author(s)
      T. Nakano, H. Baba, K. Ohishi, Y. Cai, S. Yoon, K. M. Kojima
    • Organizer
      15th International Conference on Muon Spin Rotation, Relaxation and Resonance
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Negative muon spin rotation and relaxation study on antiferromagnetic order of Na clusters in sodalite2022

    • Author(s)
      T. Nakano, H. Baba, S. Takeshita, J. Sugiyama
    • Organizer
      15th International Conference on Muon Spin Rotation, Relaxation and Resonance
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 負ミュオンスピン回転/緩和法によるソーダライト中のNaクラスターの反強磁性秩序の観測2021

    • Author(s)
      中野 岳仁,馬場 洋行,竹下 聡史,杉山 純
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Antiferromagnetic Mott Insulating State of Alkali-Metal Nanoclusters in Sodalite Studied by Muons and DFT Calculations2021

    • Author(s)
      Takehito Nakano, Hiroyuki Baba, Kazuki Ohishi, Yipeng Cai, Sungwon Yoonc, Kenji M. Kojima
    • Organizer
      International Conference on Materials Science and Engineering 2021 (Materials Oceania)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Positive and Negative Muons Spin Rotation/Relaxation Studies on Mott-Insulating State of Alkali-Metal Clusters in Sodalite2021

    • Author(s)
      Takehito Nakano, Hiroyuki Baba, Kazuki Ohishi, Yipeng Cai, Sungwon Yoon, Kenji M. Kojima, Soshi Takeshita, Jun Sugiyama
    • Organizer
      MATERIALS RESEARCH MEETING 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Correlated electron systems in the regular nanospace of zeolite crystals2021

    • Author(s)
      Takehito Nakano
    • Organizer
      日本中間子科学会Muon合同研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ソーダライト中のアルカリ金属ナノクラスターのミュオンナイトシフト2021

    • Author(s)
      中野岳仁, 馬場洋行, 大石一城, Yipeng Cai, Sungwon Yoon, 小嶋健児
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ソーダライト中のアルカリ金属ナノクラスターのミュオンナイトシフト2020

    • Author(s)
      中野岳仁, 馬場洋行, 大石一城, Yipeng Cai, Sungwon Yoon, 小嶋健児
    • Organizer
      日本中性子科学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Gap opening on the ferrimagnetic state in Na-K alloy nanoclusters arrayed in zeolite LSX -Can s-electrons be a strongly correlated system?-2020

    • Author(s)
      Takehito Nakano
    • Organizer
      International Conference on Functional Materials Science 2020 (ICFMS 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Complementary Use of Muons, Neutrons and Synchrotron Radiation -Study of Magnetism in Arrayed Alkali-Metal Nanoclusters-2020

    • Author(s)
      Takehito Nakano
    • Organizer
      The 5th International Symposium of Quantum Beam Science at Ibaraki University
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon Knight shift study on alkali-metal clusters in sodalite2020

    • Author(s)
      Hiroyuki Baba, Takehito Nakano, Kazuki Ohishi, Yipeng Cai, Sungwon Yoon, and Kenji M. Kojima
    • Organizer
      The 5th International Symposium of Quantum Beam Science at Ibaraki University
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electron Spin Resonance Study on Rb Nanoclustes in Zeolite A2020

    • Author(s)
      Akihiro Hayashi and Takehito Nakano
    • Organizer
      The 5th International Symposium of Quantum Beam Science at Ibaraki University
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気探針としての放射光・中性子・ミュオンの連携利用研究 -ソーダライト中のアルカリ金属ナノクラスターの反強磁性秩序とモット転移-2020

    • Author(s)
      中野岳仁
    • Organizer
      Materials Research Meeting Forum 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Strong Enhancement of Spin-orbit Interaction and Ferromagnetism in Potassium Nanoclusters Incorporated into Zeolite A2019

    • Author(s)
      Takehito Nakano
    • Organizer
      International Conference on Magnetism and Its Application (ICMIA 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Strong Enhancement of Spin-orbit Interaction in Alkali Metal Nanoclusters Incorporated into Zeolite A2019

    • Author(s)
      T. Nakano and Y. Nozue
    • Organizer
      Materials Research Meeting 2019 (MRM 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Direct Observation of Ferromagnetic Moment of Potassium Nanoclusters Arrayed in Zeolite A by Polarized Neutron Diffraction2019

    • Author(s)
      T. Nakano, K. Ohishi, M. Matsuura
    • Organizer
      Materials Research Meeting 2019 (MRM 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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

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