Low temperature measurements of the energy loss rate in quantum wires and 2DEGs in an InAlAs/InGaAs/InAlAs heterostructure

C. Prasad, D. K. Ferry, H. H. Wieder

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Electron heating measurements have been carried out in etched quantum wires of various widths and in two-dimensional electron gases at low temperature in InGaAs quantum wells. The value of the temperature exponent of the energy loss rate, an indicator of the type of predominant energy loss scattering, is found to be n=3, indicative of piezoelectric scattering. At a lattice temperature <1 K, our wires show an exponential behavior expected for deviations from equipartition. Further departure is found at still lower temperatures to a width-dependent loss rate, which is thought to be due to many-body effects in the one-dimensional wires.

Original languageEnglish (US)
Pages (from-to)475-478
Number of pages4
JournalSuperlattices and Microstructures
Volume34
Issue number3-6
DOIs
StatePublished - Sep 1 2003

Keywords

  • Energy loss rates
  • Quantum wires
  • Transport

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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