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Investigation on the duality nature of f-electron systems in the strongly correlated compounds

Research Project

Project/Area Number 25400379
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionUniversity of the Ryukyus

Principal Investigator

MAEHIRA TAKAHIRO  琉球大学, 理学部, 教授 (20372807)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords相対論的バンド計算 / f電子系 / 電子相関 / 磁性 / j-j結合 / 希土類化合物 / アクチニド化合物 / 遍歴・局在 / f電子系
Outline of Final Research Achievements

The duality nature of the f electrons, i.e. itinerant or localized, is an essential issue of the strongly correlated f electron systems.The purpose of the present project is to investigate the physical properties arising from the duality nature of the f electrons in rare‐earth compounds.We derive the Fermi surface for α-Ce by a relativistic linear augmented plane wave method within the framework of a local-density approximation. The Fermi surfaces thus obtained are composed of an hole sheet and an electron sheet, all of which have no open orbits. The Fermi surface topology is consistent with the experimental results for the high-field magnetoresistance.We have also studied the physical properties arising from the itinerant or localized nature of the f electrons in other europium compound like EuGa4、EuBi3、EuPd3、EuRh2、EuIr2.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (12 results)

All 2015 2014 2013

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results)

  • [Journal Article] Fermi Surface Properties of Eu-Divalent and Eu-Trivalent Electronic States with the AuCu3-type Cubic Structure2015

    • Author(s)
      A. Nakamura, T. Takeuchi, Y. Tatetsu, T. Maehira, H. Harima, M. Hedo, T. Nakama, Y. Onuki
    • Journal Title

      J. Phys: Conf. Series

      Volume: 592 Pages: 1-6

    • DOI

      10.1088/1742-6596/592/1/012048

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The Electronic Structure and Theoretical Analysis of the de Haas-van Alphen Effect in YbSn32013

    • Author(s)
      Y. Tatetsu and T. Maehira
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 3 Pages: 034709-034709

    • DOI

      10.7566/jpsj.82.034709

    • NAID

      210000132469

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electronic Structures of of PuX (X=S, Se, Te)2013

    • Author(s)
      T. Maehira, E. Sakai and Y. Tatetsu
    • Journal Title

      Journal of the Korean Physical Society

      Volume: 63 Issue: 3 Pages: 809-811

    • DOI

      10.3938/jkps.63.809

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electronic Properties of AnSn3 (An = Th, U, Np, and Pu)2013

    • Author(s)
      Y. Tatetsu, E. Sakai and T. Maehira
    • Journal Title

      Journal of the Korean Physical Society

      Volume: 63 Issue: 3 Pages: 356-358

    • DOI

      10.3938/jkps.63.356

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Key Role of Hybridization between Actinide 5f and Oxygen 2p Orbitals for Electronic Structure of Actinide Dioxides2013

    • Author(s)
      Y. Hasegawa, T. Maehira and T. Hotta
    • Journal Title

      Journal of Modern Physics

      Volume: 4 Pages: 1574-1582

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 強磁性体EuPd_2の純良単結晶育成とフェルミ面2014

    • Author(s)
      大貫惇睦,仲村愛,赤嶺拡,竹内徹也,立津慶幸,眞榮平孝裕,本多史憲,松林和幸,上床美也,辺土正人, 仲間隆男
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Research-status Report
  • [Presentation] Euラーベス相構造の電子構造とフェルミ面2014

    • Author(s)
      渡部紘幸,立津慶幸,眞榮平孝裕
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Research-status Report
  • [Presentation] YbAl2の電子構造とフェルミ面2014

    • Author(s)
      渡部紘幸,佐藤竜馬,池田亘,立津慶幸,眞榮平孝裕
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Fermi surfaces of Eu compounds2013

    • Author(s)
      Y. Tatetsu and T. Maehira
    • Organizer
      International Conference on Strongly Correlated Electron System 2013 (SCES2013)
    • Place of Presentation
      Japan (Tokyo)
    • Related Report
      2013 Research-status Report
  • [Presentation] Fermi surfaces of GdPb3 and YPb32013

    • Author(s)
      T. Maehira, Y. Tatetsu, Y. Watanabe and Y. Uehara
    • Organizer
      International Conference on Strongly Correlated Electron System 2013 (SCES2013)
    • Place of Presentation
      Japan (Tokyo)
    • Related Report
      2013 Research-status Report
  • [Presentation] EuPb3とCaPb3の電子構造2013

    • Author(s)
      渡部紘幸,立津慶幸,眞榮平孝裕
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report
  • [Presentation] EuBi3とSrBi3の電子構造2013

    • Author(s)
      眞榮平孝裕,渡部紘幸,立津慶幸
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2020-05-15  

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