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Physical Properties of Quantum Liquid Crystals

Administrative Group

Project AreaPhysical Properties of Quantum Liquid Crystals
Project/Area Number 19H05822
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Shibauchi Takasada  東京大学, 大学院新領域創成科学研究科, 教授 (00251356)

Co-Investigator(Kenkyū-buntansha) 戸川 欣彦  大阪公立大学, 大学院工学研究科, 教授 (00415241)
和達 大樹  兵庫県立大学, 理学研究科, 教授 (00579972)
小林 研介  東京大学, 大学院理学系研究科(理学部), 教授 (10302803)
永崎 洋  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 首席研究員 (20242018)
大串 研也  東北大学, 理学研究科, 教授 (30455331)
花栗 哲郎  国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (40251326)
求 幸年  東京大学, 大学院工学系研究科(工学部), 教授 (40323274)
岡崎 浩三  東京大学, 物性研究所, 准教授 (40372528)
遠山 貴巳  東京理科大学, 先進工学部物理工学科, 教授 (70237056)
SHANNON Nic  沖縄科学技術大学院大学, 量子理論ユニット, 教授 (70751585)
木村 剛  東京大学, 大学院工学系研究科(工学部), 教授 (80323525)
有田 亮太郎  国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (80332592)
有馬 孝尚  東京大学, 大学院新領域創成科学研究科, 教授 (90232066)
紺谷 浩  名古屋大学, 理学研究科, 教授 (90272533)
Project Period (FY) 2019-06-28 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥231,530,000 (Direct Cost: ¥178,100,000、Indirect Cost: ¥53,430,000)
Fiscal Year 2023: ¥31,330,000 (Direct Cost: ¥24,100,000、Indirect Cost: ¥7,230,000)
Fiscal Year 2022: ¥51,090,000 (Direct Cost: ¥39,300,000、Indirect Cost: ¥11,790,000)
Fiscal Year 2021: ¥83,720,000 (Direct Cost: ¥64,400,000、Indirect Cost: ¥19,320,000)
Fiscal Year 2020: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2019: ¥49,400,000 (Direct Cost: ¥38,000,000、Indirect Cost: ¥11,400,000)
Keywords対称性の破れ / ネマティック / 回転対称性 / 電子液晶 / スピン液晶 / 量子多体効果 / ソフトマター / 量子液体 / 電子ネマティック / 高温超伝導 / 自己組織化
Outline of Research at the Start

本新学術領域研究では、現代の物性物理学の中核をなす磁性・金属絶縁体転移・超伝導のそれぞれの分野において独立に研究され始めている、液晶に類似した「スピン液晶」、「電荷液晶」、「電子対液晶」と言うべき新しい電子状態に着目し、これらを体系化した「量子液晶」の学理を構築する。相互関係の薄かった研究者間の有機的結合を促進するため、領域内外に開かれた共通設備を整備し、若手研究者の交換プログラム等を活用し、共同研究を企画する。若手育成および国際化には特に注力し、国際研究ネットワークを構築して「量子液晶」の概念を物質科学の学術領域として確立する。

Outline of Final Research Achievements

In this project, we aimed to unify the study of electronic states resembling liquid crystals, which appear in correlated metals, spin systems, and superconductors, under the concept of Quantum Liquid Crystals (QLCs). Through collaboration among researchers studying different target materials, we achieved significant advancements in understanding the diversity and universality of QLCs. These advancements include the discovery of various novel QLCs, the development of theoretical guidelines to classify their diversity, and the verification of unconventional superconductivity caused by QLC fluctuations. We promoted researcher interaction and joint research by organizing annual meetings and international conferences, managing shared facilities, and supporting young researchers. Additionally, we engaged in public relations activities including video distribution and international activities including participation in the international supernetwork called Quantum Materials Accelnet.

Academic Significance and Societal Importance of the Research Achievements

液晶状態は、液体の持つ流動性と固体の持つ異方性を合わせ持つ状態である。固体中の電子では、量子力学的なスピン自由度や軌道自由度により方向性が出現し、電子集団全体として非自明な異方性を獲得する場合がある。このような電子状態を「量子液晶」という新しい概念により統一的に捉える研究を推進した。特に、本新学術領域研究により異分野の研究者の連携を促進することで、今までにない新しい量子液晶状態の発見につながり、様々な量子液晶の普遍的な理解が格段に進歩した。物性物理学で重要な分野である量子液体に異方性を導入した量子液晶の研究は、今後ますます発展が期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (26 results)

All 2024 2023 2021 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (3 results) Funded Workshop (6 results)

  • [Int'l Joint Research] Institute for Complex Adaptive Matter(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Institute for Complex Adaptive Matter(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Radboud University(オランダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] TRIUMF/University of British Columbia/McMaster University(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Zurich/ETH/PSI(スイス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Columbia University(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] 量子液晶の物性科学の紹介2021

    • Author(s)
      芝内孝禎
    • Journal Title

      日本液晶学会誌「液晶」

      Volume: 25 Pages: 144-151

    • NAID

      40022665022

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 空間反転対称性の破れた量子液晶の探索2021

    • Author(s)
      大串研也,木村 剛
    • Journal Title

      日本液晶学会誌「液晶」

      Volume: 25 Pages: 152-158

    • NAID

      40022664441

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 量子液晶の精密計測2021

    • Author(s)
      花栗哲郎,佐藤 卓
    • Journal Title

      日本液晶学会誌「液晶」

      Volume: 25 Pages: 159-167

    • NAID

      40022664443

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 量子液晶の理論的研究2021

    • Author(s)
      紺谷 浩,求 幸年
    • Journal Title

      日本液晶学会誌「液晶」

      Volume: 25 Pages: 168-174

    • NAID

      40022664448

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 液晶と磁気超構造の類似性2021

    • Author(s)
      有馬孝尚
    • Journal Title

      日本液晶学会誌「液晶」

      Volume: 25 Pages: 175-181

    • NAID

      40022665031

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 固体におけるネマティックの物理2021

    • Author(s)
      芝内孝禎
    • Journal Title

      日本物理学会誌

      Volume: 76 Pages: 764-765

    • NAID

      130008125698

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exotic Superconducting States in FeSe-based Materials2020

    • Author(s)
      T. Shibauchi, T. Hanaguri, and Y. Matsuda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 89 Issue: 10 Pages: 102002-102002

    • DOI

      10.7566/jpsj.89.102002

    • NAID

      40022375193

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Exotic pairing states in FeSe-based nematic superconductors2023

    • Author(s)
      T. Shibauchi
    • Organizer
      ICAM week of Science 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 共催シンポジウム「金属、スピン系、超伝導体における様々な量子液晶状態」2023

    • Author(s)
      大串研也ほか
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 領域紹介「量子液晶の物性科学」2020

    • Author(s)
      芝内孝禎
    • Organizer
      第14回物性科学領域横断研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 領域紹介「量子液晶の物性科学」2019

    • Author(s)
      芝内孝禎
    • Organizer
      第13回物性科学領域横断研究会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 領域ホームページ「量子液晶の物性科学」

    • URL

      http://qlc.jp/

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report
  • [Remarks] 領域動画サイト「QLCチャンネル」

    • URL

      https://www.youtube.com/channel/UCT4ychc-2b0hf1UtJPLlYNQ

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] 領域ホームページ「量子液晶の物性科学」

    • URL

      http://qlc.jp

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Funded Workshop] The 22nd Japan-Korea-Taiwan Symposium on Strongly Correlated Electron Systems (JKT22)2024

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] International Conference on Quantum Liquid Crystals 2023 (QLC2023)2023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] The 14th APCTP Workshop on Multiferroics2023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] International Conference on Quantum Liquid Crystals 2021 (QLC2021)2021

    • Related Report
      2021 Annual Research Report
  • [Funded Workshop] QLC Topical Workshop on Elastoresistance in Correlated Materials2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] QLC Topical Workshop on Quantum Magnetism and Neutron scattering2019

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-07-04   Modified: 2025-01-30  

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