Electron-electron scattering between parallel two-dimensional electron gases

T. J. Gramila, J. P. Eisenstein, A. H. MacDonald, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


Electron-electron scattering rates between isolated two-dimensional electron gases separated by a thin barrier have been measured at low temperatures in GaAs/AlGaAs double quantum well structures. Separate electrical connection to the two electron systems allows the injection of current into one and the detection of a small drag-induced voltage across the other. The drag voltage is a direct measure of the interwell momentum relaxation rate. Measurements of this rate suggest that two processes contribute to the interactions, simple Coulomb scattering and a longer-range process, possibly due to acoustic phonons.

Original languageEnglish (US)
Pages (from-to)446-450
Number of pages5
JournalSurface Science
Issue number1-3
StatePublished - Feb 19 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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