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Control of multiple physical properties and quantum dynamics by dynamical Jahn-Teller effect

Research Project

Project/Area Number 23K20821
Project/Area Number (Other) 21H01026 (2021-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2021-2023)
Section一般
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionTohoku University

Principal Investigator

Kimura Shojiro  東北大学, 金属材料研究所, 准教授 (20379316)

Co-Investigator(Kenkyū-buntansha) 中野 元裕  大阪大学, 大学院理学研究科, 教授 (00212093)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2024: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Keywords動的ヤーンテラー効果 / 軌道自由度 / 電気磁気効果 / 物性制御 / 強磁場 / 多重物性制御 / d軌道 / ヤーンテラー効果
Outline of Research at the Start

本研究は動的ヤーンテラー効果を用いた多様な物性制御の実証とその量子ダイナミクスの解明を目的とする。これまで金属錯体[MnIII(taa)]の実験によって電気磁気効果が動的ヤーンテラー効果により増強されること、これがヤーンテラー歪の磁場配向が誘起する磁気四極子によって引き起こされることを明らかにした。さらに誘電率測定から動的ヤーンテラー効果に伴う分子擬回転の量子化を示唆する結果を得た。

Outline of Final Research Achievements

In order to demonstrate the possibility of controlling various physical properties using the Dynamic Jahn-Teller (JT) effect, which reveals the functionality and quantum nature of the d-orbital degree of freedom, we measured magnetostriction, thermal expansion, dielectric constant, electric field and AC magnetization of the transition metal complex [MnIII(taa)] in a magnetic field. As a result, We have clarified that due to the alignment of the molecular distortions by the magnetic field which occurs because of the influence of coupling between spin and JT distortion via spin-orbit interaction, uniaxial extensional magnetostriction and a relatively large magnetocapacitance effect arise, and that the magnetoelectric effect specific is enhanced. Furthermore, we showed that the magnetoelectric effect in [MnIII(taa)], which belongs to the crystal point group Td, is caused by a magnetic quadrupole produced by the application of a magnetic field.

Academic Significance and Societal Importance of the Research Achievements

これまで注目されて来なかった動的JT効果に発現する軌道自由度を活用することによる多様な物性制御を実証した。これにより、電気分極、誘電性、格子歪みなどの多岐にわたる物性の連続的かつ自在な制御の可能性が拡がった。またJT歪みの磁場配向が空間反転対称性が破れによる非自明な電気磁気結合にも効果的に働き電気磁気効果を増強する有効な手法となることが示された。また本研究の磁場誘起した磁気四極子によって電気磁気効果を発現させる発想は、磁気多極子を用いた新たな機能発現の方法を提供する。本研究で示めされた動的JT効果による物性制御の手法は交差相関の科学を進展させるとともに、多機能物質の設計に新たな指針を与える。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results)

  • [Journal Article] A high-temperature multiferroic Tb2(MoO4)32024

    • Author(s)
      Tajima Shimon、Masuda Hidetoshi、Nii Yoichi、Kimura Shojiro、Onose Yoshinori
    • Journal Title

      Communications Materials

      Volume: 5 Issue: 1 Pages: 2671-6

    • DOI

      10.1038/s43246-024-00717-8

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetic Excitation in the S=1/2 Ising-like Antiferromagnetic Chain CsCoCl3 in Longitudinal Magnetic Fields Studied by High-field ESR Measurements2023

    • Author(s)
      S. Kimura, H. Onishi, K. Okunishi, M. Akaki, Y. Narumi, M. Hagiwara, K. Kindo, H. Kikuchi
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 92 Issue: 9 Pages: 094701-094701

    • DOI

      10.7566/jpsj.92.094701

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel quantum phase of the chromium spinel oxide HgCr2O4 in high magnetic fields2022

    • Author(s)
      S. Kimura, S. Imajo, M. Gen, T. Momoi, M. Hagiwara, H. Ueda, and Y. Kohama
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 18

    • DOI

      10.1103/physrevb.105.l180405

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonreciprocal Directional Dichroism in Magnetoelectric Spin Glass2022

    • Author(s)
      Sawada Y.、Kimura S.、Watanabe K.、Yamaguchi Y.、Arima T.、Kimura T.
    • Journal Title

      Physical Review Letters

      Volume: 129 Issue: 21

    • DOI

      10.1103/physrevlett.129.217201

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chirality‐Dependent Magnetoelectric Responses in a Magnetic‐Field‐Induced Ferroelectric Phase of Pb(TiO)Cu4(PO4)42022

    • Author(s)
      Kimura Kenta、Katsuyoshi Tsukasa、Miyake Atsushi、Tokunaga Masashi、Kimura Shojiro、Kimura Tsuyoshi
    • Journal Title

      Advanced Electronic Materials

      Volume: 2200167 Issue: 6 Pages: 2200167-2200167

    • DOI

      10.1002/aelm.202200167

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optical selection rules of the magnetic excitation in the S=1/2 one-dimensional Ising-like antiferromagnet BaCo2V2O82022

    • Author(s)
      S. Kimura, H. Onishi, A. Okutani, M. Akaki, Y. Narumi, M. Hagiwara, K. Okunishi, K. Kindo, Z. He, T. Taniyama, M. Itoh
    • Journal Title

      Phys. Rev. B

      Volume: 105 Issue: 1 Pages: 014417-014417

    • DOI

      10.1103/physrevb.105.014417

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enhancement of the Magnetoelectric Effect Using the Dynamic Jahn-Teller Effect in a Transition-Metal Complex2022

    • Author(s)
      Otsuki Yasunao、Kimura Shojiro、Awaji Satoshi、Nakano Motohiro
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 11

    • DOI

      10.1103/physrevlett.128.117601

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonreciprocal Directional Dichroism in a Magnetic-Field-Induced Ferroelectric Phase of Pb(TiO)Cu<sub>4</sub>(PO<sub>4</sub>)<sub>4</sub>2021

    • Author(s)
      Katsuyoshi Tsukasa、Kimura Kenta、Yang Zhuo、Kato Yasuyuki、Kimura Shojiro、Motome Yukitoshi、Kohama Yoshimitsu、Kimura Tsuyoshi
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 12 Pages: 123701-123701

    • DOI

      10.7566/jpsj.90.123701

    • NAID

      210000159436

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Electric dipole spin resonance and nonreciprocal directional dichroism in the quantum spin systems2024

    • Author(s)
      S. Kimura
    • Organizer
      Modern developments and applications of ESR, THz and high magnetic fields
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High field ESR measurements of the magnetoelectric spin dimer systems2024

    • Author(s)
      S. Kimura
    • Organizer
      Asia-Pacific EPR/ESR Symposium 2024
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 空間反転対称性を持たない遷移金属錯体の電気磁気効果2024

    • Author(s)
      木村尚次郎
    • Organizer
      錯体化学会第74回討論会
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 錯体化合物[Mn0.5Ga0.5(taa)]の強磁場下での動的ヤーンテラー効果2023

    • Author(s)
      黒澤陸杜, 木村尚次郎, 淡路智, 中野元裕
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 強磁場ESRを用いた量子磁性体の研究2023

    • Author(s)
      木村尚次郎
    • Organizer
      第62回電子スピンサイエンス学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Selection rules of ESR transitions in the quantum spin systems2022

    • Author(s)
      S. Kimura
    • Organizer
      Asia-Pacific EPR/ESR Symposium 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 圧電性常磁性体における磁場誘起磁気四極子による電気磁気効果2021

    • Author(s)
      大月保直, 木村尚次郎, 淡路智, 中野元裕
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Magnetoelectric effect by the field-induced cluster magnetic quadrupole in the piezoelectric paramagnetic complex2021

    • Author(s)
      Y. Otsuki, S. Kimura, S. Awaji and M. Nakano
    • Organizer
      17th International Conference on Molecule Based Magnets
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The ESR Selection Rules of the Magnetic Excitation in the S = 1/2 Quasi-One-Dimensional Ising-like Antiferromagnet BaCo2V2O82021

    • Author(s)
      S. Kimura, H. Onishi, A, Okutani, M. Akaki, Y. Narumi, M. Hagiwara, K. Okunishi, K. Kindo, Z. He, T. Taniyama, and M. Itoh
    • Organizer
      SMAR-APNMR2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 擬一次元Ising型反強磁性体BaCo2V2O8における 磁気励起の光学選択則2021

    • Author(s)
      木村尚次郎, 大西弘明, 奥谷顕, 赤木暢, 鳴海康雄, 萩原政幸, 奥西巧一, 金道浩一, 何長振, 谷山智康, 伊藤満
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2026-01-16  

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