Bloch Oscillations, Zener Tunneling, and Wannier-Stark Ladders in the Time Domain

Jon Rotvig, Antti-Pekka Jauho, Henrik Smith

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    Abstract

    We present a time-domain analysis of carrier dynamics in a semiconductor superlattice with two minibands. Integration of the density-matrix equations of motion reveals a number of new features: (i) for certain values of the applied static electric field strong interminiband transitions occur; (ii) in static fields the complex time dependence of the density matrix displays a sequence of stable plateaus in the low field regime, and (iii) for harmonic fields the Fourier representation of the density matrix is shown to be intimately related to the quasienergy spectrum.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume74
    Issue number10
    Pages (from-to)1831-1834
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1995

    Bibliographical note

    Copyright (1995) by the American Physical Society.

    Keywords

    • SEMICONDUCTORS
    • LOCALIZATION
    • ELECTRIC-FIELD
    • SUPERLATTICE

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