Observation of a Bloch-Gr̈neisen regime in two-dimensional electron transport

H. L. Stormer, L. N. Pfeiffer, K. W. Baldwin, K. W. West

Research output: Contribution to journalArticlepeer-review

149 Scopus citations

Abstract

We have observed a rapid decrease in the rate by which two-dimensional electrons in very high-mobility (107 cm2/V sec) GaAs-AlxGa1-xAs heterostructures are scattered by acoustic phonons as the temperature approaches T=0. This precipitous drop in scattering rate is caused by strong phase-space restrictions for electron-phonon scattering. The characteristic temperature for this transition is not the Debye temperature of the GaAs host material, but the temperature at which phonons of twice the Fermi wave vector cease to be thermally excited.

Original languageEnglish (US)
Pages (from-to)1278-1281
Number of pages4
JournalPhysical Review B
Volume41
Issue number2
DOIs
StatePublished - 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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