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Electromagnetic topological response from bi-anisotropic material

Research Project

Project/Area Number 19K05319
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

INOUE Jun-ichi  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 主幹研究員 (90323427)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords物性理論 / 電磁波応答 / 双非等方物質 / 電磁場応答 / 電磁応答 / 双非等方性物質 / トポロジー
Outline of Research at the Start

(1)トポロジカル物質からのアクシオン電磁応答に双非等方性を考慮すること,(2)双非等方性物質に内包されたトポロジカル要素を発掘すること,の2つを軸に考える.前者については,電磁気構成方程式の非等方的な非対角成分が,トポロジカル物質の電磁応答にどのように表出するかを明らかにすることが計画の中心である.後者については,前者とは逆に現象論的に行われてきた双非等方性物質の議論に,電子系のトポロジカルな構造がどのように反映されているのかを明らかにすることで,回路におけるジャイレーターとトポロジカル物質の対応をつける.

Outline of Final Research Achievements

A bi-anisotropic material is characterized by magnetelectric and electromagnetic tensors, which are included in construction relation. Properties of these tensors have been independently discussed so far in microwave-engineering and in condensed-matter physics.
Thus, there remain possibilities where knowledge of one can been transfer to the other and vice versa, resulting in feasible and novel effects. The present study tried to bridge the two subjects, and was found to be effective.
Also as serendipity, we propose dynamical instability to explain a newly discovered phenomenon, wiggling and jump of a coronene nanofiber, by an experimentalist during preliminary stage for future collaboration.

Academic Significance and Societal Importance of the Research Achievements

本研究は,従来異なる分野で行われていた類似の題材を,統一的な立場から捉え直し,共通言語や互いの対応付けを明確にすることで,両者の知見の相互乗り入れを可能にして,将来的な新規現象の開拓の素地を作ろうとするものでった.今回得られた結果は,両分野において有用であると考えられる.
また,分野横断型の研究は,準備に大きな労力を要求されることと,短期的な成果を得ることが難しい事から敬遠される傾向にあるが,この取り組みは,新たな研究シーズを見いだすために有効であると思われる.

Report

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

    (4 results)

All 2021 Other

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

  • [Int'l Joint Research] Radboud University(オランダ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Fabrication and Optical Properties of Fiber-Shaped Pseudoisocyanine J-Aggregates Grown Directly on a Glass Substrate.2021

    • Author(s)
      Ken Takazawa, Jun-ichi Inoue, Takashi Kuroda
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 125 Issue: 47 Pages: 26108-26115

    • DOI

      10.1021/acs.jpcc.1c07303

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Resonance splitting in microring resonators constructed from organic nanofiber active waveguides.2021

    • Author(s)
      Ken Takazawa, Jun-ichi Inoue
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: 6 Pages: 0620041-0620047

    • DOI

      10.35848/1347-4065/ac00ff

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase‐transition‐induced jumping, bending, and wriggling of single crystal nanofibers of coronene2021

    • Author(s)
      Ken Takazawa, Jun‐ichi Inoue, Kazutaka Mitsuishi, Yukihiro Yoshida, Hideo Kishida, Paul Tinnemans, Hans Engelkamp, Peter C. M. Christianen
    • Journal Title

      scientific reports

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-82703-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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