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Surface plasmon in a two-dimensional Anderson insulator with interactions

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 53, Issue: 11, Page: 7299-7307
1996
  • 11
    Citations
  • 0
    Usage
  • 7
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    7

Article Description

We study the effect of interactions on the zero-temperature ac conductivity of a two-dimensional Anderson insulator at low frequencies. We show that the enhancement of the real part of conductivity due to the Coulomb correlations in the occupation numbers of localized states results in the change of the sign of the imaginary part within a certain frequency range. As a result, the propagation of a surface plasmon in a localized system becomes possible. We analyze the dispersion law of the plasmon for the two cases: unscreened Coulomb interactions and the interactions screened by a gate electrode spaced by some distance from the electron plane. © 1996 The American Physical Society.

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