Measuring electron-electron scattering rates through mutual friction

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

Research output: Contribution to journalArticlepeer-review

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Electron-electron (e-e) interactions have been probed using a new measurement technique which provides direct determination of e-e scattering rates. The technique measures the voltage induced in one two-dimensional electron gas (2DEG) when a current is driven through a second, parallel, 2DEG. Measurements with closely spaced layers confirm the importance of Coulomb scattering in the interlayer e-e interaction. For large layer spacings, however, Coulomb scattering diminishes rapidly and a second mechanism dominates. Measurements indicate that the strong interlayer interactions in this regime are due to the exchange of virtual phonons between the electron systems.

Original languageEnglish (US)
Pages (from-to)442-448
Number of pages7
JournalPhysica B: Physics of Condensed Matter
Issue number1-4
StatePublished - Mar 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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