Coulomb drag in coherent mesoscopic systems

Asger Mortensen, Karsten Flensberg, Antti-Pekka Jauho

    Research output: Contribution to journalJournal articleResearchpeer-review

    242 Downloads (Pure)

    Abstract

    We present a theory for Coulomb drag between two mesoscopic systems. Our formalism expresses the drag in terms of scattering matrices and wave functions, and its range of validity covers both ballistic and disordered systems. The consequences can be worked out either by analytic means, such as the random matrix theory, or by numerical simulations. We show that Coulomb drag is sensitive to localized states. which usual transport measurements do not probe. For chaotic 2D systems we find a vanishing average drag, with a nonzero variance. Disordered 1D wires show a finite drag, with a large variance, giving rise to a possible sign change of the induced current.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume86
    Issue number9
    Pages (from-to)1841-1844
    ISSN0031-9007
    DOIs
    Publication statusPublished - 2001

    Bibliographical note

    Copyright (2001) American Physical Society

    Keywords

    • FLUCTUATIONS
    • DOTS
    • TRANSPORT
    • BALLISTIC QUANTUM WIRES
    • COUPLED ELECTRON-SYSTEMS

    Cite this