Quantum Transport: The Link between Standard Approaches in Superlattices

Andreas Wacker, Antti-Pekka Jauho

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    Abstract

    Theories describing electrical transport in semiconductor superlattices can essentially be divided in three disjoint categories: (i) transport in a miniband; (ii) hopping between Wannier-Stark ladders; and (iii) sequential tunneling. We present a quantum transport model, based on nonequilibrium Green functions, which, in the appropriate limits, reproduces the three conventional theories and describes the transport in the previously inaccessible region of the parameter space.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume80
    Issue number2
    Pages (from-to)369-372
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1998

    Bibliographical note

    Copyright (1998) by the American Physical Society.

    Keywords

    • NEGATIVE DIFFERENTIAL CONDUCTIVITY
    • SEMICONDUCTOR SUPERLATTICES
    • EMISSION

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