Inelastic Quantum Transport in Superlattices: Success and Failure of the Boltzmann Equation

Andreas Wacker, Antti-Pekka Jauho, Stephan Rott, Alexander Markus, P. Binder, G.H. Döhler

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    Abstract

    Electrical transport in semiconductor superlattices is studied within a fully self-consistent quantum transport model based on nonequilibrium Green functions, including phonon and impurity scattering. We compute both the drift-velocity-held relation and the momentum distribution function covering the whole held range from linear response to negative differential conductivity. The quantum results are compared with the respective results obtained from a Monte Carlo solution of the Boltzmann equation. Our analysis thus sets the limits of validity for the semiclassical theory in a nonlinear transport situation in the presence of inelastic scattering.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume83
    Issue number4
    Pages (from-to)836-839
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1999

    Bibliographical note

    Copyright (1999) by the American Physical Society.

    Keywords

    • MODEL
    • MINIBAND TRANSPORT
    • NEGATIVE DIFFERENTIAL CONDUCTIVITY
    • HOPPING TRANSPORT
    • SEMICONDUCTOR SUPERLATTICES

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