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On the Consistency of Approximations to the Landau-Level Broadening by Random Potentials with Large Correlation Length

  • K. Broderix
  • N. Heldt
  • H. Leschke
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 87)

Abstract

We discuss the uniqueness and positivity of previously proposed approximations to the density of states for an electron in two dimensions subject to a perpendicular uniform magnetic field and a Gaussian random potential with large correlation length.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • K. Broderix
    • 1
  • N. Heldt
    • 1
  • H. Leschke
    • 1
  1. 1.Institut für Theoretische PhysikUniversität Erlangen-NürnbergErlangenFed. Rep. of Germany

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