Local detection of nuclear spins in quantum Hall systems by means of single electron transistors

• Project/Area Number: 19740179
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics I
• Research Institution: The University of Tokyo
• Principal Investigator: KAWAMURA Minoru The University of Tokyo, 生産技術研究所, 特任助教 (60391926)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,110,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥2,200,000 (Direct Cost: ¥2,200,000)
• Keywords: 量子ホール効果 / 核スピン / 単一電子トランジスタ / 核スピン偏極 / 核磁気共鳴 / 超微細相互作用

Research Abstract

単一電子トランジスタを用いて量子ホール状態における核磁気共鳴信号を得るために核スピン偏極方法の最適化をおこなった。幅の狭いホールバー試料に量子ホール効果ブレークダウンの臨界電流値よりわずかに大きな電流を印加した場合に、核磁気共鳴信号が最大となることを見出した。

Research Products

• [Journal Article] Coherent manipulation of nuclear spins in the breakdown regime of integer auantum Hall states (2009)
  • Author(s): M Kawamura
  • Journal Title: Journal of Physics, Conference series (掲載確定)
  • Peer Reviewed
• [Journal Article] Dynamic nuclear polarization and Knight shift measurements in a breakdown regime of integer quantum Hall effect (2008)
  • Author(s): M. Kawamura, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, T. Machida
  • Journal Title: Physica E Vol. 40 Pages: 1389-1391
  • Peer Reviewed
• [Journal Article] Dynamic nuclear polarization in a quantum Hall Corbino Disk (2008)
  • Author(s): M. Kawamura, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, K. Hamaya, T. Machida
  • Journal Title: Journal of Physical Society of Japan Vol. 77
  • NAID: 110006613878
  • Peer Reviewed
• [Journal Article] Dynamic nuclear polarization and Knight shift measurements in a breakdown regime of integer quantum Hall effect (2008)
  • Author(s): M. Kawamura
  • Journal Title: Physica E 40 Pages: 1389-1391
  • Peer Reviewed
• [Journal Article] Dynamic Nuclear Polarization in a Quantum Hall Corbino Disk (2008)
  • Author(s): M. Kawamura
  • Journal Title: Journal of the Physical Society of Japan 70
  • NAID: 110006613878
  • Peer Reviewed
• [Journal Article] Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect (2007)
  • Author(s): H. Takahashi, M. Kawamura, S. Masubuchi, K. Hamaya, T. Machida, Y. Hashimoto, S. Katsumoto
  • Journal Title: Applied Physics Letters Vol. 91
  • Peer Reviewed
• [Journal Article] Electrical coherent control of nuclear spins in a breakdown regime of quantum Hall effect (2007)
  • Author(s): H. Takahashi
  • Journal Title: Applied Physics Letters 91
  • Peer Reviewed
• [Journal Article] Coherent manipulation of nuclear spins in the breakdown regime of integer quantum Hall states
  • Author(s): M. Kawamura, H. Takahashi, Y. Hashimoto, S. Katsumoto, T. Machida
  • Journal Title: Journal of Physics Conference Series (掲載確定)
  • Peer Reviewed
• [Presentation] 動的核スピン偏極によるv=2/3分数量子ホール状態のスピン相転移点シフト (2008)
  • Author(s): 川村稔, 小野雅司, 橋本義昭, 勝本信吾, 町田友樹
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 盛岡
  • Year and Date: 2008-09-20
• [Presentation] 動的核スピン偏極によるν=2/3分数量子ホール状態のスピン相転移点シフト (2008)
  • Author(s): 川村稔
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学、盛岡市
  • Year and Date: 2008-09-20
• [Presentation] Coherent manipulation of nuclear spins in the breakdown regime of integer quantum Hall states (2008)
  • Author(s): M. Kawamura, H. Takahashi, Y. Hashimoto, S. Katsumoto, T. Machida
  • Organizer: The 25th international conference on low temperature physics
  • Place of Presentation: Amsterdam, the Netherlands
  • Year and Date: 2008-08-12
• [Presentation] Coherent manipulation of nuclear spins in the breakdown regime of integer Quantum Hall states (2008)
  • Author(s): M. Kawamura
  • Organizer: The 25th international conference on low temperature physfcs
  • Place of Presentation: アムステルダム、オランダ
  • Year and Date: 2008-08-12
• [Presentation] Pump and probe measurements of nuclear polarization induced by breakdown of fractional quantum Hall effect (2008)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, T. Machida
  • Organizer: The 25th international conference on low temperature physics
  • Place of Presentation: Amsterdam, the Netherlands
  • Year and Date: 2008-08-07
• [Presentation] Pump and probe measurements of nuclear polarization induced by breakdown of fractional Quantum Hall effect (2008)
  • Author(s): M. Kawamura
  • Organizer: The 25th international conference on low temperature physics
  • Place of Presentation: アムステルダム、オランダ
  • Year and Date: 2008-08-07
• [Presentation] 量子ホール効果ブレークダウンを利用した核スピンのコヒーレント制御 (2008)
  • Author(s): 高橋裕之, 川村稔, 増渕覚, 橋本義昭, 勝本信吾, 浜屋宏平, 町田友樹
  • Organizer: 第55回応用物理学関係連合講演会
  • Place of Presentation: 船橋
  • Year and Date: 2008-03-30
• [Presentation] 分数量子ホール効果ブレークダウン領域における動的核スピン偏極 (2008)
  • Author(s): 川村稔, 小野雅司, 橋本義昭, 勝本信吾, 浜屋宏平, 町田友樹
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 東大阪
  • Year and Date: 2008-03-23
• [Presentation] 量子ホール効果ブレークダウンによる核スピンの電気的制御 (2008)
  • Author(s): 川村稔
  • Organizer: 望月基金記念講演会
  • Place of Presentation: 吹田
  • Year and Date: 2008-03-22
• [Presentation] 量子ホール効果ブレークダウンの動的核スピン偏極効率 (2007)
  • Author(s): 小野雅司, 川村稔, 高橋裕之, 橋本義昭, 勝本信吾, 浜屋宏平, 町田友樹
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-21
• [Presentation] 量子ホール効果ブレークダウンを利用した核スピンの偏極と制御 (2007)
  • Author(s): 高橋裕之, 川村稔, 小野雅司, 橋本義昭, 勝本信吾, 浜屋宏平, 町田友樹
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-21
• [Presentation] Electrical manipulation of nuclear spins in a breakdown regime of quantum Hall effect (2007)
  • Author(s): M. Kawamura, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, K. Hamaya, T. Machida
  • Organizer: 15th international conference on nonequilibrium carrier dynamics in semiconductors
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2007-07-27
• [Presentation] Dynamic nuclear polarization and Knight shift measurements in a breakdown regime of integer quantum Hall effect (2007)
  • Author(s): M. Kawamura, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, K. Hamaya, T. Machida
  • Organizer: The 17th international conference on electronic properties two-dimensional systems
  • Place of Presentation: Genova, Italy
  • Year and Date: 2007-07-17
• [Presentation] Dynamic nuclear polarization and Knight shift measurements in a breakdown regime of integer quantum Hall effect (2007)
  • Author(s): M. Kawamura
  • Organizer: Electronic Properties on two-dimensional systems
  • Place of Presentation: Genova, Itary
  • Year and Date: 2007-07-17