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Quantum many-body state due to nonmagnetic degrees of freedom

Research Project

Project/Area Number 23740258
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

HATTORI Kazumasa  東京大学, 物性研究所, 助教 (30456199)

Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords強相関系 / 四極子 / 四極子秩序 / 朝永ラッティンジャー液体 / モンテカルロ法 / スピン波 / 超伝導 / マグノン / 強相関電子系 / フラストレーション / 近藤効果
Outline of Final Research Achievements

Magnetic degrees of freedom have played a main role in our modern technology for many years. Recently, there appeared a considerable interest on non-magnetic degrees of freedom inherent in the nature of electrons. In this study, we have discussed various properties arising from such nonmagnetic degrees of freedom: "Chirality" formed by several spins turns out to be a main player in Kondo problem in tetrahedron spin configuration. "Quadrupole" moments that is anisotropic charge distributions of electrons, give a new opportunity of critical phenomena related to so called XY universality class. We have also developed a new Monte Carlo algorithm for one-dimensional systems and a theory for certain class of superconductivity. We expect that these results becomes the fundamentals for future studies in this field.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (18 results)

All 2015 2014 2013 2012 2011 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Invited: 4 results) Remarks (2 results)

  • [Journal Article] Quantum impurity in a Tomonaga-Luttinger liquid: Continuous-time quantum Monte Carlo approach2014

    • Author(s)
      K. Hattori and A. Rosch
    • Journal Title

      Physical Review B

      Volume: 90 Issue: 11

    • DOI

      10.1103/physrevb.90.115103

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Antiferro Quadrupole Orders in Non-Kramers Doublet Systems2014

    • Author(s)
      Kazumasa Hattori and Hirokazu Tsunetsugu
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 83 Issue: 3 Pages: 1-19

    • DOI

      10.7566/jpsj.83.034709

    • NAID

      40020017822

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Continuous-Time Quantum Monte Carlo Approach for Impurity Anderson Models with Phonon-Assisted Hybridizations2013

    • Author(s)
      Kazumasa Hattori
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 6 Pages: 1-5

    • DOI

      10.7566/jpsj.82.064709

    • NAID

      40019665688

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] p-wave superconductivity near a transverse saturation field2013

    • Author(s)
      K. Hattori and H. Tsunetsugu
    • Journal Title

      Physical Review B

      Volume: 87 Issue: 6 Pages: 0645011-5

    • DOI

      10.1103/physrevb.87.064501

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Non-Fermi liquid, unscreened scalar chirality, and parafermions in a frustrated tetrahedron Anderson model2012

    • Author(s)
      K. Hattori and H. Tsunetsugu
    • Journal Title

      Physical Review B

      Volume: 86 Issue: 5 Pages: 0544211-6

    • DOI

      10.1103/physrevb.86.054421

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 相互作用する四極子の有効古典模型のモンテカルロ解析2015

    • Author(s)
      服部一匡
    • Organizer
      局所多自由度の相関が創出する新物性
    • Place of Presentation
      愛媛大学(愛媛県松山市)
    • Year and Date
      2015-02-02 – 2015-02-03
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 四極子秩序と拡張四極子近藤模型の周辺について2014

    • Author(s)
      服部一匡
    • Organizer
      強相関電子系理論の最前線
    • Place of Presentation
      勝浦観光ホテル(和歌山県東牟婁郡)
    • Year and Date
      2014-12-19 – 2014-12-21
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 立方晶Gamma3四極子の秩序について2014

    • Author(s)
      服部一匡
    • Organizer
      研究環「特異な結晶構造に創出する新奇量子相の解明」第 2 回研究会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2014-09-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Quantum impurity in a Tomonaga-Luttinger liquid: continuous-time quantum Monte Carlo approach2014

    • Author(s)
      服部一匡、Achim Rosch
    • Organizer
      日本物理学会秋期大会
    • Place of Presentation
      中部大学 (愛知県春日井市)
    • Year and Date
      2014-09-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] Application of continuous-time quantum Monte Carlo to impurity problems in Tomonaga-Luttinger liquids2014

    • Author(s)
      K. Hattori
    • Organizer
      New Horizon of Strongly Correlated Physics 2014
    • Place of Presentation
      東京大学物性研究所 (千葉県柏市)
    • Year and Date
      2014-06-16 – 2014-07-04
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Continuous-time Quantum Monte Carlo approach for quantum impurity problems in Tomonaga-Luttinger liquids2014

    • Author(s)
      K. Hattori and A. Rosch
    • Organizer
      DPG spring meeting
    • Place of Presentation
      Dresden (Germany)
    • Year and Date
      2014-04-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] 四面体アンダーソン模型における非フェルミ液体と非遮蔽スカラーカイラリティ2011

    • Author(s)
      服部一匡、常次宏一
    • Organizer
      2011年日本物理学会秋季大会
    • Place of Presentation
      富山大学
    • Related Report
      2011 Research-status Report
  • [Presentation] Underscreening Kondo physics in a frustrated tetrahedron impurity in a metal2011

    • Author(s)
      K. Hattori and H. Tsunetsugu
    • Organizer
      Strongly Correlated Electron Systems 2012
    • Place of Presentation
      Cambridge, UK
    • Related Report
      2011 Research-status Report
  • [Presentation] Non-Fermi liquid and unscreened scalar chirality in a frustrated tetrahedron Anderson model2011

    • Author(s)
      K. Hattori
    • Organizer
      Japan-Swiss Work Shop 2011: New Electronic Properties through Structure and Correlation(招待講演)
    • Place of Presentation
      ETH, Zurich, Switzerland
    • Related Report
      2011 Research-status Report
  • [Presentation] 強磁性超伝導体における横飽和磁場近傍で誘起されるp波超伝導

    • Author(s)
      服部 一匡
    • Organizer
      第2回 強相関電子系理論の最前線
    • Place of Presentation
      勝浦観光ホテル、和歌山
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] URhGeにおける横飽和磁場近傍で発現するp波超伝導の解析

    • Author(s)
      服部 一匡、常次 宏一
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学東広島キャンパス
    • Related Report
      2012 Research-status Report
  • [Remarks] Pr化合物の軌道秩序に伴う臨界性の新しい特徴

    • URL

      http://www.issp.u-tokyo.ac.jp/maincontents/organization/labs/tsunetsugu_group.html

    • Related Report
      2013 Research-status Report
  • [Remarks] 横磁場下イジング揺らぎによる超伝導

    • URL

      http://tsune.issp.u-tokyo.ac.jp/researchURhGe.html

    • Related Report
      2012 Research-status Report

URL: 

Published: 2011-08-05   Modified: 2020-05-15  

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