Hot Electron Magnetotransport in AlxGa1−xAs-GaAs Samples of Different Geometry

  • R. J. Haug
  • K. von Klitzing
  • K. Ploog
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 87)


The size dependence of the magnetotransport properties of Al x Ga 1−x As-GaAs heterojunctions has been studied in high electric and magnetic fields. For the breakdown of the quantum Hall effect an increase of the critical drift velocity with decreasing sample width was found in Hall bar geometries, whereas in Corbino geometries a slight decrease was observed. In the regime of the breakdown step-like structures were observed for all sample sizes. A new instability was seen for filling factors of v < 2 at electric fields of ≈ 200V/cm.


Filling Factor High Magnetic Field Lateral Diffusion Quantum Hall Effect Sample Width 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • R. J. Haug
    • 1
  • K. von Klitzing
    • 1
  • K. Ploog
    • 1
  1. 1.Max-Planck-Institut für FestkörperforschungStuttgart 80Fed. Rep. of Germany

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