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Spin-Dependent Nonlocal Quantum Transport Influenced by Gate Voltage in GaAs/AlGaAs Wires

  • Kazuhito Tsukagoshi
  • Kenichi Oto
  • Sadao Takaoka
  • Kazuo Murase
  • Yukihiko Takagaki
  • Kenji Gamo
  • Susumu Namba
Conference paper

Summary

The magneto-transport properties of two-dimensional electron gas (2DEG) at high magnetic fields and low temperatures are related to the edge and bulk states. These states cause nonlocal effects, such as nonlocal Shubnikov-de Haas (SdH) oscillations, and the influence of extra probes on the four-terminal resistance. We observed the selective diminishing of the down spin peak and the up spin peak in nonlocal SdH oscillations and investigated the influence of the extra probes which ostensibly have nothing to do with the four-terminal resistance. The influence of the extra probes on normal and nonlocal SdH measurement is explained by a decrease in the chemical potentials of the edge states at the extra probes.

Keywords

Gate Voltage High Magnetic Field Edge State Bulk State Gate Area 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Japan 1992

Authors and Affiliations

  • Kazuhito Tsukagoshi
  • Kenichi Oto
  • Sadao Takaoka
  • Kazuo Murase
    • 1
  • Yukihiko Takagaki
    • 2
  • Kenji Gamo
  • Susumu Namba
    • 3
  1. 1.Department of Physics, Faculty of ScienceOsaka UniversityToyonaka, 560Japan
  2. 2.Center for Solid State Electronics ResearchArizona State UniversityTempleUSA
  3. 3.Department of Electrical Engineering, Faculty of Engineering Science and Research Center for Extreme MaterialsOsaka UniversityToyonaka, 560Japan

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