Single-Electron Spintronics

2009 Fiscal Year Self-evaluation Report

• Project Area: Creation and control of spin current
• Project/Area Number: 19048016
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: The University of Tokyo
• Principal Investigator: KATSUMOTO Shingo The University of Tokyo, 物性研究所, 教授 (10185829)
• Project Period (FY): 2007 – 2010
• Keywords: 単電子帯電効果 / 量子ドット / スピン軌道相互作用 / 量子情報

Research Abstract

本計画においては,低電力・高速動作が期待される単電子デバイスと,スピントロニクスデバイスとを組み合わせた系の基礎物理学を調べることで,更に低電力で安定的に動作する素子の実現を目指すものである.具体的目標として:
(1) 量子ドットなどにおける単電子効果を利用してスピン制御を行う.
(2) 同じく単電子効果を利用して,スピン流やスピン偏極が生じているかどうか,検出する検出器を開発する.
(3) 更に,スピン軌道相互作用と単電子効果を組み合わせることで非磁性の半導体中にスピン偏極を生成する.
を掲げ,これらを実験的理論的に追求する.

Research Products

• [Journal Article] Detection of spin polarization in a quantum wire (2010)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Journal Title: Physica E 42 Pages: 809-812
• [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, T. Machida
  • Journal Title: Appl. Phys. Lett. 96 Pages: 032102(1-3)
• [Journal Article] Spin filtering due to quantum interference in periodic mesoscopic networks (2010)
  • Author(s): A. Aharony, O. Entin-Wohlman, Y. Tokura, S. Katsumoto
  • Journal Title: Physica E 42 Pages: 629-633
• [Journal Article] Detection of spin polarization with a side-coupled quantum dot (2009)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Journal Title: Phys. Rev. B 79 Pages: 195353(1-5)
• [Journal Article] Temperature-Dependent Screening of the Edge State around Antidots in the Quantum Hall Regime (2009)
  • Author(s): M. Kato, A. Endo, S. Katsumoto, Y. Iye
  • Journal Title: Phys. Rev. Lett. 102 Pages: 086802(1-4)
• [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, T. Machida
  • Journal Title: Phys. Rev. B 79 Pages: 193304(1-3)
• [Journal Article] Magnetotransport through a two-dimensional hole antidot lattice: Signatures of Berry phase (2008)
  • Author(s): N. Kang, E. Abe, Y. Hashimoto, Y. Iye, S. Katsumoto
  • Journal Title: phys. stat. sol. (c) 5 Pages: 2847-2849
• [Journal Article] Excited-state spectroscopy on a quantum dot side-coupled to a quantum wire (2008)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Journal Title: Appl. Phys. Lett. 93 Pages: 112111(1-3)
• [Journal Article] Spin filtering by a periodic spintronic device (2008)
  • Author(s): A. Aharony, O. Entin-Wohlman, Y. Tokura, S. Katsumoto
  • Journal Title: Phys. Rev. B 78 Pages: 125328(1-4)
• [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: J. Phys. Soc. Jpn. 77 Pages: 093715(1-4)
• [Presentation] Probing edge states in the quantum Hall regime with a side coupled quantum dot (2009)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Organizer: The 36th International Symposium on Compound Semiconductors
  • Place of Presentation: Santa-Barbara, USA
  • Year and Date: 2009-09-02
• [Presentation] Measurement of diffusion thermopower in the quantum Hall systems (2009)
  • Author(s): K. Fujita, A. Endo, S. Katsumoto, Y. Iye
  • Organizer: 18th International Conference on Electronic Properties of Two-Dimensional Systems
  • Place of Presentation: Kobe
  • 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, T. Machida
  • Organizer: 18th International Conference on Electronic Properties of Two-Dimensional Systems
  • Place of Presentation: Kobe
  • Year and Date: 2009-07-23
• [Presentation] Detection of spin polarization in a quantum wire (2009)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Organizer: 18th International Conference on Electronic Properties of Two-Dimensional Systems
  • Place of Presentation: Kobe
  • Year and Date: 2009-07-21
• [Presentation] Detection of Spin Ploarization with a Side Coupled Quantum Dot (2009)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Organizer: International Symposium on Nanosucale Transport and Technology
  • Place of Presentation: Atsugi
  • Year and Date: 2009-01-22
• [Presentation] Nuclear Spin Polarization Induced by Breakdown of Fractional Quantum Hall Effect (2009)
  • Author(s): M. Kawamura, M. Ono, Y. Hashimoto, S. Katsumoto, T. Machida
  • Organizer: International Symposium on Nanosucale Transport and Technology
  • Place of Presentation: Atsugi
  • Year and Date: 2009-01-22
• [Presentation] Coherent transport in quantum dot systems with spin (2008)
  • Author(s): S. Katsumoto
  • Organizer: The 23rd Nishinomiya-Yukawa Memorial International Workshop
  • Place of Presentation: Kyoto
  • Year and Date: 2008-11-20
• [Presentation] Excited State Spectroscopy in Side-Coupled Quantum Dots (2008)
  • Author(s): T. Otsuka, E. Abe, Y. Iye, S. Katsumoto
  • Organizer: IEEE Nanotechnology Materials and Devices
  • Place of Presentation: Kyoto
  • Year and Date: 2008-10-21
• [Presentation] Charge States of a Superconducting Single-Electron Transistor Coupled with a Two-Dimensional Electron Gas (2008)
  • Author(s): E. Abe, Y. Kimura, Y. Hashimoto, Y. Iye, S. Katsumoto
  • Organizer: IEEE Nanotechnology Materials and Devices
  • Place of Presentation: Kyoto
  • Year and Date: 2008-10-20