Surface acoustic waves and the magnetoconductivity of a two-dimensional electron gas

M.R. Eskildsen, H. Smith

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The frequency- and wavevector-dependent conductivity tensor of a two-dimensional electron gas is determined within a semiclassical model containing two different characteristic times a transport time and a lifetime. The velocity shift of a surface acoustic wave, caused by the piezoelectric coupling, is calculated as a function of magnetic field. The results are applicable under conditions where the frequency of the surface acoustic wave is comparable to the cyclotron frequency. The calculated velocity shift is compared to that observed for composite fermions in the quantum Hall regime near half-filling.
    Original languageEnglish
    JournalJournal of Physics Condensed Matter
    Volume8
    Issue number36
    Pages (from-to)6597-6605
    ISSN0953-8984
    DOIs
    Publication statusPublished - 1996

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