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Spin-dependent effective interaction and its application to quantum dots

Research Project

Project/Area Number 17540265
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionSophia University

Principal Investigator

TAKAYANAGI Kazuo  Sophia University, 理工学部, 教授 (30183859)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Kiyotaka  上智大学, 理工学部, 教授 (00143363)
YOSHIZAWA Kanako  上智大学, 理工学部, 研究員 (70439339)
Project Period (FY) 2005 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Keywords有効相互作用 / スピン相関 / 近距離相関 / 相転移 / 量子ドット / 応答関数 / スピン密度波 / 量子相転移 / 遠距離相関 / スピン励起 / 電荷励起
Research Abstract

応答関数に関しては、強磁場でスピンを制御した2次元電子系(量子ホール系)のスピン応答関数と、それが低密度側で示す不安定性の間の関係を明らかにした。その立場から、fillingfactor が2 の系に対して密度とゼーマンエネルギーで指定される平面上での磁気相図を完成した。有効相互作用に関しては、多重散乱の効果をスピンに依存する電子間有効相互作用として、使いやすいSkyrme 型のポテンシャルで表し、いくつかの応用により、その有用性を示した。

Report

(5 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (27 results)

All 2009 2008 2007 2006 2005

All Journal Article (17 results) (of which Peer Reviewed: 15 results) Presentation (10 results)

  • [Journal Article] Magnetic Phase diagram of nu=2 quantum Hall systems2009

    • Author(s)
      Kanako Yoshizawa and Kazuo Takayanagi
    • Journal Title

      Physical Review B79 125321

      Pages: 15-15

    • NAID

      120005880844

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Spin instability and phase diagram of nu=2 quantum Hall systems2009

    • Author(s)
      Kanako Yoshizawa and Kazuo Takayanagi
    • Journal Title

      Journal of Physics: Conference Series, 150 042242

      Pages: 4-4

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] New general scheme for improving accuracy in implementing self-consistent iterative calculations: illustration in the STLS theory2009

    • Author(s)
      Kanako Yoshizawa and Ysutami Takada
    • Journal Title

      Journal of Physics: Condensed Matter, 21 064204

      Pages: 8-8

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Lambda(1405) resonance in baryon-meson scattering with a bound state embedded in the continuum.2009

    • Author(s)
      Sachiko Takeuchi and Kiyotaka Shimizu
    • Journal Title

      Physical Review C79 045204

      Pages: 1-12

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic phase diagram of nu=2 quantum Hall systems2009

    • Author(s)
      K. Yoshizawa, K. Takayanagi
    • Journal Title

      Physical Review B 79

    • NAID

      120005880844

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Utilizing group property of Bogoliubov transformation2008

    • Author(s)
      Kazuo Takayanagi
    • Journal Title

      Nuclear Physics A808

      Pages: 17-26

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Completeness relation in the R-matrix theory of scattering2008

    • Author(s)
      Kazuo Takayanagi
    • Journal Title

      Physical Review, A77 062714

      Pages: 6-6

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Utilizing Group Property of Bogoliubov Transformation2008

    • Author(s)
      Kazuo Takayanagi
    • Journal Title

      Nuclear Physics A 808

      Pages: 17-26

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Completeness relation in the R-matrix theory of scattering2008

    • Author(s)
      Kazuo Takayanagi
    • Journal Title

      Physical Review A 77

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin instability of integer quantum Hall systems2007

    • Author(s)
      Kanako Yoshizawa and Kazuo Takayanagi
    • Journal Title

      Physical Review B76 155329

      Pages: 9-9

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Λ (1405) as a resonance in the baryon-meson scattering coupled to the q3 state in a quark model2007

    • Author(s)
      Sachiko Takeuchi and Kiyotaka Shimizu
    • Journal Title

      Physical Review C76 035204

      Pages: 11-11

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Spin instability of integer quantum Hall systems2007

    • Author(s)
      K. Yoshizawa, K. Takayanagi
    • Journal Title

      Physical Review B76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lambda(1405)as a resonance in the baryon-meson scattering coupled tothe q^3 state in a quark model2007

    • Author(s)
      S. Takeuchi, K. Shimizu
    • Journal Title

      Physical Review C76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pentaquark as a NK* Bound State with TJ = 0 3/22005

    • Author(s)
      Sachiko Takeuchi and Kiyotaka Shimizu
    • Journal Title

      Physical Review C71 062202

      Pages: 1-5

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Charge-density response function of two-dimensional electron systems in a magnetic field2005

    • Author(s)
      Kanako Yoshizawa and Kazuo Takayanagi
    • Journal Title

      Physical Review B71 125118

      Pages: 17-17

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Charge-density response function of two-dimensional electron systems in a magnetic field2005

    • Author(s)
      Kanako Yoshizawa
    • Journal Title

      Physical Review B71

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Pentaquark as a NK^* bound state with TJ^p=03/2^-2005

    • Author(s)
      Sachiko Takeuchi
    • Journal Title

      Physical Review C71

    • Related Report
      2005 Annual Research Report
  • [Presentation] Effective interaction in electron systems YITP workshop on development of nuclear structure models from the viewpoint of nuclear force2009

    • Author(s)
      Kazuo Takayanagi
    • Organizer
      Yukawa Institute for Theoretical Physics
    • Place of Presentation
      Kyoto
    • Related Report
      2008 Final Research Report
  • [Presentation] Spin instability and phase diagram of nu=2 quantum Hall systems2008

    • Author(s)
      K. Yoshizawa, K. Takayanagi
    • Organizer
      25th international conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam
    • Year and Date
      2008-08-04
    • Related Report
      2008 Annual Research Report
  • [Presentation] Spin instability and phase diagram of nu=2 quantum Hall systems2008

    • Author(s)
      Kanako Yoshizawa and Kazuo Takayanagi
    • Organizer
      25^<th> International Conference on Low Temperature Physics
    • Place of Presentation
      Amsterdam
    • Related Report
      2008 Final Research Report
  • [Presentation] 整数量子ホール系における常磁性相及び強磁性相の不安定性2008

    • Author(s)
      吉澤香奈子、高柳和雄
    • Organizer
      日本物理学会第63 回年次大会
    • Place of Presentation
      立教大学
    • Related Report
      2008 Final Research Report
  • [Presentation] Lambda(1405) in a baryon-meson scattering described from a quark-model viewpoint2008

    • Author(s)
      Sachiko Takeuchi and Kiyotaka Shimizu
    • Organizer
      Proceedings of the Sendai International Symposium on Strangeness in Nuclear and Hadronic Systems
    • Place of Presentation
      Sendai
    • Related Report
      2008 Final Research Report
  • [Presentation] 整数量子ホール系のスピン不安定性2007

    • Author(s)
      吉澤 香奈子
    • 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] 量子ホール系におけるスピン偏極不安定性2007

    • Author(s)
      吉澤香奈子、高柳和雄
    • Organizer
      日本物理学会第62 回年次大会
    • Place of Presentation
      北大
    • Related Report
      2008 Final Research Report
  • [Presentation] Lambda(1405) as a resonance in the baryon-meson scattering coupled to the q3 state in a quark model2007

    • Author(s)
      Sachiko Takeuchi and Kiyotaka Shimizu
    • Organizer
      Proceedings of the 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon
    • Place of Presentation
      IKP, Juelich, Germany
    • Related Report
      2008 Final Research Report
  • [Presentation] 2 層ν=2 量子ホール系の相転移2007

    • Author(s)
      吉澤香奈子、高柳和雄
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      鹿児島大
    • Related Report
      2008 Final Research Report
  • [Presentation] 量子ホール系におけるスピン密度励起のソフト化と相転移2006

    • Author(s)
      吉澤香奈子、高柳和雄
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      奈良女子大
    • Related Report
      2008 Final Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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