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Construction of effective model with realistic electronic structures of Strongly correlated electron systems and its analysis

Research Project

Project/Area Number 19740195
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionSaitama University

Principal Investigator

IMAI Yoshiki  Saitama University, 大学院・理工学研究科, 助教 (10396666)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords強相関電子系 / 希土類化合物 / 第一原理計算
Research Abstract

For the strongly correlated electron systems, we constructed more accurate effective models and investigated physical properties quantitatively. In particular, we focus on the rare earth materials which are well known as the typical strongly correlated systems. Some physical quantities were calculated based on the constructed effective models. The obtained results were in good agreement with the experimental ones. We could propose the quantitative theoretical method to study the strongly correlated electron systems.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (38 results)

All 2010 2009 2008 2007 Other

All Journal Article (19 results) (of which Peer Reviewed: 19 results) Presentation (15 results) Remarks (4 results)

  • [Journal Article]2010

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      J. Phys.: Conf. Series 200,012066

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Origin of anomalous specific heat coefficient of YbAl_32010

    • Author(s)
      Y.Imai, T.Saso
    • Journal Title

      Journal of Physics : Conference Series 200

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2009

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      J. Phys. Soc. Jpn. 78,064707

      Pages: 1-7

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article]2009

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      J. Phys.: Conf. Series 150,042065

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Specific Heat-Coefficient of YbAl_3 Studied by Combined Nearly Free Electron Conduction Band Hybridized with Localized f Electrons with Correlation Effect2009

    • Author(s)
      Y.Imai, T.Saso
    • Journal Title

      Journal of the Physical Society of Japan 78

    • NAID

      10025961462

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Correlation effect on effective model with realistic electronic structure fa r heavy fermion compound Ybals2009

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      Journal of Physics: Conference Series 150

      Pages: 0420651-4

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Specific Heat-Coefficient of YbA13 Studied by Combined Nearly Free Ele ctron Conduction Band Hybridized with Localized f Electrons with Corr elation Effect2009

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      Journal of the Physical Society of Japan 78(掲載決定)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2008

    • Author(s)
      H. Kuroiwa, Y. Imai, T. Saso
    • Journal Title

      J. Phys. Soc. Jpn. 77,Suppl.A

      Pages: 196-198

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Construction of Effective Model for Heavy Fermion Metal Ybal_3 with H ybridization Effect between Nearly Free Electron Bands and f-states and its Analysis2008

    • Author(s)
      H. Kuroiwa, Y. Imai, T. Saso
    • Journal Title

      Journal of the Physical Society of Japan, Suppl. A 77

      Pages: 196-198

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Construction of Effective Model for Heavy Fermion Metal YbAl_3 with Hybridization Effect between Nearly Free Electron Bands and f-states and its Analysis2008

    • Author(s)
      H. Kuroiwa, Y. Imai, T. Saso
    • Journal Title

      Journal of the Physical Society of Japan Suppl. A 77

      Pages: 196-198

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2007

    • Author(s)
      H. Kuroiwa, Y. Imai, T. Saso
    • Journal Title

      J. Phys. Soc. Jpn. 76,124704

      Pages: 1-8

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article]2007

    • Author(s)
      T. Izumi, Y. Imai, T. Saso
    • Journal Title

      J. Phys. Soc. Jpn. 76,084715

      Pages: 1-4

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article]2007

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      Phys. Rev. B 75,165102

      Pages: 1-8

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article]2007

    • Author(s)
      Y. Imai, K. Sakurazawa, T. Saso
    • Journal Title

      J. Mag. Mag. Mat. 310

      Pages: 243-245

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Absence of Hybridization Gap in Heavy Electron Systems and Analysis of YbAl_3 in terms of Nearly Free Electron Conduction Band2007

    • Author(s)
      H. Kuroiwa, Y. Imai, T. Saso
    • Journal Title

      Journal of the Physical Society of Japan 76

      Pages: 1247041-8

    • NAID

      110006532206

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory for Magnetic Anisotropy of Field-Induced Insulator-to-Metal Transition in Cubic Kondo Insulator YbB_122007

    • Author(s)
      T. Izumi, Y. Imai, T. Saso
    • Journal Title

      Journal of the Physical Society of Japan 76

      Pages: 847151-4

    • NAID

      110006366864

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anomalous magnetic phase diagram in low-carrier two-band systems and possible application to CeOs_4Sb_122007

    • Author(s)
      Y. Imai, T. Saso
    • Journal Title

      Physical Review B 75

      Pages: 1651021-8

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Applications of path-integral renormalization group method combined with density functional theory2007

    • Author(s)
      Y. Imai, Y. Otsuka, M. Imada
    • Journal Title

      Journal of Physics: Condensed Matter 19

      Pages: 3652301-8

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anomalous phase-diagram of filled skutterudite CeOs_4Sb_12 under external magnetic field2007

    • Author(s)
      Y. Imai, K. Sakurazawa, T. Saso
    • Journal Title

      Journal of Magnetism and Magnetic Materials 310

      Pages: 243-245

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 重い電子系の形成と秩序化2009

    • Author(s)
      今井剛樹
    • Organizer
      新学術領域研究
    • Place of Presentation
      京都、関西セミナーハウス
    • Year and Date
      2009-11-24
    • Related Report
      2009 Final Research Report
  • [Presentation] 現実的なバンド構造を考慮した強相関電子系の理論2009

    • Author(s)
      今井剛樹
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」若手秋の学校
    • Place of Presentation
      関西セミナーハウス、京都
    • Year and Date
      2009-11-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] 重い電子系少数キャリアー物質における金属-絶縁体転移2009

    • Author(s)
      今井剛樹
    • Organizer
      日本物理学会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 25aPS-1042009

    • Author(s)
      今井剛樹、佐宗哲郎
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-22
    • Related Report
      2009 Final Research Report
  • [Presentation] ICM2009, Mo-D-1. 1-402009

    • Author(s)
      Y. Imai, T. Saso
    • Organizer
      ドイツ
    • Place of Presentation
      カールスルーエ
    • Year and Date
      2009-07-27
    • Related Report
      2009 Final Research Report
  • [Presentation] Origin of anomalous specific heat coefficient of YbAl_32009

    • Author(s)
      今井剛樹
    • Organizer
      International Conference on Magnetism
    • Place of Presentation
      Karlsruhe, Germany
    • Year and Date
      2009-07-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] Theory of anomalous specific heat-coefficient of Ybal2009

    • Author(s)
      今井剛樹
    • Organizer
      新学術領域研究「重い電子系の形成と秩序化」第1回研究会
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2009-03-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] 22pQB-112008

    • Author(s)
      今井剛樹, 佐宗哲郎
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-22
    • Related Report
      2009 Final Research Report
  • [Presentation] 重い電子系Ybal3における電子比熱の温度依存性の解析2008

    • Author(s)
      今井剛樹
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] LT26, PC-Mo1722008

    • Author(s)
      Y. Imai, T. Saso
    • Organizer
      オランダ・アムステルダム
    • Year and Date
      2008-08-11
    • Related Report
      2009 Final Research Report
  • [Presentation] Correlation effect on effective model with realistic electronic structure for heavy fermion compound Ybala2008

    • Author(s)
      今井 剛樹
    • Organizer
      The 25th International Conference on Low Tempe rature Physics(LT25)
    • Place of Presentation
      RAIコンベンションセンター、アムステルダム(オランダ)
    • Year and Date
      2008-08-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Construction of Effective Model for Heavy Fermion Metal YbAl3 with Hybridization Effect between Nearly Free Electron Bands and f-states and its Analysis2007

    • Author(s)
      今井 剛樹
    • Organizer
      Skutterudite 2007
    • Place of Presentation
      神戸大学
    • Year and Date
      2007-09-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] 23pWE-62007

    • Author(s)
      黒岩宏征, 今井剛樹, 佐宗哲郎
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-23
    • Related Report
      2009 Final Research Report
  • [Presentation] CeOs4Sb12の特異な磁気相図の出現条件2007

    • Author(s)
      今井 剛樹
    • Organizer
      日本物理学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2007-09-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Skutterudite 20072007

    • Author(s)
      今井剛樹, 佐宗哲郎
    • Place of Presentation
      神戸大学
    • Related Report
      2009 Final Research Report
  • [Remarks]

    • URL

      http://sces.th.phy.saitama-u.ac.jp/~imai/

    • Related Report
      2009 Final Research Report
  • [Remarks]

    • URL

      http://sces.th.phy.saitama-u.ac.jp/~imai/research.htm

    • Related Report
      2009 Annual Research Report
  • [Remarks] 東京大学物性研究所

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://sces.th.phy.saitama-u.ac.jp/~imai/research.htm

    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2020-05-15  

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