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2008 Fiscal Year Self-evaluation Report

Dynamics of Topological Solitons in Noncommutative Space

Research Project

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Project/Area Number 18540246
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 InstitutionTohoku University

Principal Investigator

EZAWA Zyun F.  Tohoku University, 大学院・理学研究科, 教授 (90133925)

Project Period (FY) 2006 – 2008
Keywords非可換空間 / 非可換ソリトン / 量子ホール効果 / トポロジカル・ソリトン / スカーミオン / サインゴードン・ソリトン / 量子位相 / 2層量子ホール系
Research Abstract

非可換空間が実現している唯一の観測可能な系は量子ホール系である.電子がランダウ準位に束縛されているため, そのx座標とy座標は交換しない.すなわち, [x,y]=iθという非可換交換関係の成立する非可換平面が実現している.θは長さの自乗の次元を持つ非可換パラメターである.この様な系でのトポロジカル・ソリトンとそのダイナミクスを解析する.
(1) 量子ホール系の長波長有効理論に基づき, 準粒子はトポロジカル励起(スカーミオン)であることが知られている.非可換平面上でのスカーミオン励起を解析し, その微視的理論を構築する.
(2) 2層量子ホール系における層間コヒーレンスとトポロジカル励起を非可換平面上での微視的理論に基づき解析する.
(3) 2層量子ホール系において, 横磁場が層間に進入したときの相転移が層間コヒーレンスおよび非可換スカーミオンに及ぼす効果を解析する.
(4) 磁場は層間にサインゴードン・ソリトンとして進入するが, そのソリトンと非可換スカーミオンの散乱を解析する.

  • Research Products

    (11 results)

All 2008 2007 2006

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) Book (1 results)

  • [Journal Article] Pseudospin Soliton in the ν=1 Bilayer Quantum Hall State2008

    • Author(s)
      A. Fukuda, D. Terasawa, M. Morino, K. Iwata, S. Kozumi, N. Kumada, Y. Hirayama, Z. F. Ezawa, and A. Sawada
    • Journal Title

      Physical Review Letters 100

      Pages: 016801-016804

    • Peer Reviewed
  • [Journal Article] Effects of In-Plane Magnetic Field Direction on the Nuclear-Spin Relaxation in the ν=2/3 Quantum Hall State2008

    • Author(s)
      K. Iwata, M. Morino, A. Fukuda, M. Suzuki, Z.F. Ezawa, A. Sawada, N. Kumada, and Y. Hirayama
    • Journal Title

      Physica E 40

      Pages: 1175-1177

    • Peer Reviewed
  • [Journal Article] Interlayer Phase Coherence and Dissipative Soliton-Lattice Regime in Bilayer Quantum Hall Systems2008

    • Author(s)
      Z.F. Ezawa, K. Ishii, and G. Tsitsishvili
    • Journal Title

      Physica E 40

      Pages: 1557 -1559

    • Peer Reviewed
  • [Journal Article] Anomalous Diagonal Resistivity and Soliton Lattice in Bilayer Quantum Hall Systems2008

    • Author(s)
      Z.F. Ezawa, K. Ishii, and G. Tsitsishvili
    • Journal Title

      Physica B 40

      Pages: 1517 -1519

    • Peer Reviewed
  • [Journal Article] Anomalous Quantum-Hall Resistance in Bilayer Counterflow Transport2007

    • Author(s)
      Z.F. Ezawa, S. Suzuki, and G. Tsitsishvili
    • Journal Title

      Physica Status Solidi (c) 4

      Pages: 485 -488

    • Peer Reviewed
  • [Presentation] Thermal Activation of the Soliton Lattice in the ν=1 Bilayer Quantum Hall Effect2008

    • Author(s)
      A. Fukuda
    • Organizer
      ICPS29 : International Conference on the Physics of Semiconductors
    • Place of Presentation
      Rio de Janeiro, Brazil
    • Year and Date
      20080727-0801
  • [Presentation] Interlayer Phase Coherence and Dissipative Soliton-Lattice Regime in Bilayer Quantum Hall Systems2007

    • Author(s)
      Z.F. Ezawa
    • Organizer
      EP2DS17 : International Conference on Electronic Properties of Two-Dimensional Systems
    • Place of Presentation
      Genova, Italy
    • Year and Date
      20070715-20
  • [Presentation] Anomalous Diagonal Resistivity and Soliton Lattice in Bilayer Quantum Hall Systems2007

    • Author(s)
      Z.F. Ezawa
    • Organizer
      The International Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      Houston, USA.
    • Year and Date
      20070513-18
  • [Presentation] Anomalous Quantum-Hall Resistance in Bilayer Counterflow Transport, International Conference on Superlattices2006

    • Author(s)
      Z.F. Ezawa
    • Organizer
      Nano-Structure and Nano-Devices
    • Place of Presentation
      Istanbul, Turkey
    • Year and Date
      20060730-0804
  • [Presentation] Anomalous Hall Resistance in Bilayer Electron Systems2006

    • Author(s)
      Z.F. Ezawa
    • Organizer
      ICPS28 : International Conference on the Physics of Semiconductors
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      20060724-28
  • [Book] Quantum Hall Effects : Field Theoretical Approach and Related Topics,2nd Edition2008

    • Author(s)
      Z.F. Ezawa
    • Total Pages
      740
    • Publisher
      World Scientific (Singapore)

URL: 

Published: 2010-06-11   Modified: 2016-04-21  

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