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 Citation (Scopus)

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 2003

Fingerprint

Semiconductor quantum wires
Two dimensional electron gas
quantum wires
Temperature measurement
temperature measurement
Heterojunctions
Energy dissipation
energy dissipation
wire
scattering
electron gas
quantum wells
exponents
Wire
Scattering
deviation
Temperature
heating
temperature
Semiconductor quantum wells

Keywords

  • Energy loss rates
  • Quantum wires
  • Transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Low temperature measurements of the energy loss rate in quantum wires and 2DEGs in an InAlAs/InGaAs/InAlAs heterostructure. / Prasad, C.; Ferry, D. K.; Wieder, H. H.

In: Superlattices and Microstructures, Vol. 34, No. 3-6, 09.2003, p. 475-478.

Research output: Contribution to journalArticle

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