Observation of many-body interactions of electrons in coupled double quantum wells

A. S. Plaut, A. Pinczuk, B. S. Dennis, J. P. Eisenstein, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We have investigated, by resonant inelastic light-scattering, the finite in-plane wavevector dispersion of the collective excitations of electron bilayers in AlGaAs/GaAs double quantum wells. As the wavevector is increased the plasmon mode first becomes Landau damped and then at larger wavevectors it re-appears as it emerges from one of the two maxima of the continuum of single-particle excitations in a two-dimensional system with two occupied subbands. These measurements enable quantitative determination of many-body interactions in dilute electron bi-layers.

Original languageEnglish (US)
Pages (from-to)158-162
Number of pages5
JournalSurface Science
Volume361-362
DOIs
StatePublished - Jul 20 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Keywords

  • Gallium arsenide
  • Heterojunctions
  • Raman scattering spectroscopy
  • Semiconductor-semiconductor heterostructures

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