Oscillatory Instabilities and Field Domain Formation in Imperfect Superlattices

  • E. Schöll
  • G. Schwarz
  • M. Patra
  • E. Prengel
  • A. Wacker

Abstract

We theoretically investigate vertical high-field transport in semiconductor superlattices, which exhibit self-generated current oscillations and the formation of stable stationary electric field domains depending on the available carrier density. We demonstrate that this behavior is strongly affected by growth-related imperfections like fluctuations of the doping density, the well and the barrier widths. We propose to use this as a novel noninvasive method to detect growth-related disorder in superlattices.

Keywords

GaAs 

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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • E. Schöll
    • 1
  • G. Schwarz
    • 1
  • M. Patra
    • 1
  • E. Prengel
    • 1
  • A. Wacker
    • 1
  1. 1.Institut für Theoretische PhysikTechnische Universität BerlinBerlinGermany

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