Correlation Effects on the Coupled Plasmon Modes of a Double Quantum Well

N. P. R. Hill, J. T. Nicholls, E. H. Linfield, M. Pepper, D. A. Ritchie, G. A. C. Jones, Ben Yu-Kuang Hu, Karsten Flensberg

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    Abstract

    At temperatures comparable to the Fermi temperature, we have measured a plasmon enhanced Coulomb drag in a GaAs/AlGaAs double quantum well electron system. This measurement provides a probe of the many-body corrections to the coupled plasmon modes, and we present a detailed comparison between experiment and theory testing the validity of local field theories. Using a perpendicular magnetic field to raise the magnetoplasmon energy we can induce a crossover to single-particle Coulomb scattering.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume78
    Issue number11
    Pages (from-to)2204-2207
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1997

    Bibliographical note

    Copyright (1997) American Physical Society.

    Keywords

    • EXCHANGE
    • 2-DIMENSIONAL ELECTRON-SYSTEMS
    • GAS
    • COULOMB DRAG
    • LAYERS

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