Evidence for 2kF electron-electron scattering processes in Coulomb drag

M. Kellogg, J. P. Eisenstein, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Measurements and calculations of Coulomb drag between two low density, closely spaced, two-dimensional electron systems are reported. The experimentally measured drag exceeds that calculated in the random phase approximation by a significant, and density dependent, factor. Studies of the dependence of the measured drag on the difference in density between the two layers clearly demonstrate that previously ignored q = 2 kF scattering processes can be very important to the drag at low densities and small layer separations.

Original languageEnglish (US)
Pages (from-to)515-519
Number of pages5
JournalSolid State Communications
Issue number12
StatePublished - Sep 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


  • A. Two-dimensional electron systems
  • D. Coulomb drag
  • D. Electron-electron scattering


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