Electrical manipulation of nuclear spins in quantum Hall systems

2011 Fiscal Year Final Research Report

• Project/Area Number: 21340077
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: The University of Tokyo
• Principal Investigator: MACHIDA Tomoki 東京大学, 生産技術研究所, 准教授 (00376633)
• Project Period (FY): 2009 – 2011
• Keywords: 量子ホール効果

Research Abstract

We have studied dynamic nuclear polarization induced by breakdown of the integer and fractional quantum Hall effect. By employing a pump and probe experiment, we determined the polarity of the dynamic nuclear polarization induced in the quantum Hall effect breakdown regime of various Landau level filling factors. We also demonstrated that the amplitude of dynamic nuclear polarization develops along the electron drift direction in the quantum Hall conductor.

Research Products

• [Journal Article] Spatial gradient of dynamic nuclear spin polarization induced by breakdown of the quantum Hall effect (2011)
  • Author(s): M. Kawamura, K. Kono, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Journal Title: Phys. Rev Volume: B83 Pages: 041305-1-4
  • DOI: doi:10.1167/12.2.3
  • Peer Reviewed
• [Journal Article] Strain induced enhancement of electric quadrupole splitting in resistively detected nuclear magnetic resonance spectrum in quantum Hall systems (2010)
  • Author(s): M. Kawamura, T. Yamashita, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Journal Title: Appl, Phys. Lett Volume: 96 Pages: 032102-1-3
  • DOI: DOI:10.1063/1.3291618
  • Peer Reviewed
• [Journal Article] Dynamic nuclear polarization induced by breakdown of fractional quantum Hall effect (2009)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, K. Hamaya, and T. Machida
  • Journal Title: Phys. Rev Volume: B79 Pages: 193304-1-4
  • DOI: DOI:10.1103/PhysRevB.79.193304
  • Peer Reviewed
• [Presentation] 偶数量子ホール状態ブレークダウンを用いた動的核スピン偏極 (2012)
  • Author(s): 梅澤青司、守谷頼、山下達也、川村稔、橋本義昭、勝本信吾、増渕覚、町田友樹
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 大阪
  • Year and Date: 2012-03-27
• [Presentation] Dynamic Nuclear Polarization Induced by Breakdown of Even-integer Quantum Hall Effect (2011)
  • Author(s): S. Umezawa, R. Moriya, M. Kawamura, S. Masubuchi, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: 2011 International Conference on Solid State Device and Materials
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2011-09-30
• [Presentation] 量子ホール系における動的核スピン偏極 (2010)
  • Author(s): 町田友樹
  • Organizer: 第15回半導体スピン工学の基礎と応用
  • Place of Presentation: 筑波
  • Year and Date: 2010-12-21
• [Presentation] Dynamic nuclear polarization induced by breakdown of even-integer quantum Hall states (2010)
  • Author(s): T. Yamashita, M. Kawamura, S. Masubuchi, R. Moriya, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: The 19th International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2010-08-02
• [Presentation] Dynamic nuclear polarization induced by breakdown of integer and fractional quantum Hall effect (2010)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: The 19th International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2010-08-02
• [Presentation] 量子ホール効果ブレークダウンによる動的核スピン偏極の電流方向依存性 (2010)
  • Author(s): 川村稔、河野公俊、橋本義昭、勝本信吾、町田友樹
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-20
• [Presentation] 量子ホール効果ブレークダウンにおける核スピン偏極極性の検出 (2010)
  • Author(s): 山下達也、川村稔、橋本義昭、勝本信吾、町田友樹
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-20
• [Presentation] Nuclear Spin Polarization Induced by Breakdown of Integer and Fractional Quantum Hall Effect (2010)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: International Symposium on Quantum Nanostructures and Spin-related Phenomena
  • Place of Presentation: okyo, Japan
  • Year and Date: 2010-03-10
• [Presentation] Enhancement of electric quadrupole splitting in resistively detected NMR spectrum in a beakdown regime of quantum Hall effect (2009)
  • Author(s): M. Kawamura, T. Yamashita, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: International Symposium on Quantum Nanophotonics and Nanoelectronics
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2009-11-18
• [Presentation] スピンをプローブとした量子ホール端状態におけるスピン偏極状態の検出 (2009)
  • Author(s): 山下達也、川村稔、増渕覚、守谷頼、村木康二、町田友樹
  • Organizer: 本物理学会2009年秋季大会
  • Place of Presentation: 熊本
  • Year and Date: 2009-09-25
• [Presentation] Strain-induced enhamcement of electric quadrupole splitting in resistively de-tected NMR spectrum in quantum Hall systems (2009)
  • Author(s): M. Kawamura, T. Yamashita, H. Takahashi, S. Masubuchi, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: The 18th International Conference on Electronic Properties of Two-Dimensional Systems
  • Place of Presentation: Kobe, Japan
  • Year and Date: 2009-07-23
• [Presentation] Nuclear spin polarization in the breakdown regimes of integer and fractional quantum Hall states (2009)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, and T. Machida
  • Organizer: The 18th International Conference on Electronic Properties of Two-Dimensional Systems
  • Place of Presentation: Kobe, Japan
  • Year and Date: 2009-07-23