Magnetic depopulation of 1D subbands in a narrow 2D electron gas in a GaAs:AlGaAs heterojunction

K. F. Berggren, T. J. Thornton, D. J. Newson, M. Pepper

Research output: Contribution to journalArticle

283 Scopus citations

Abstract

We present results on the transverse magnetoconductance in the range 0.3 to 8 T of a narrow, variable-width channel in a GaAs:AlGaAs heterojunction. As the width of the channel is decreased below 0.25 m the structure in the magnetoconductance changes from Shubnikov-de Haas oscillations to the magnetic depopulation of one-dimensional subbands. A semiclassical WKB calculation is presented which gives good agreement with experiment.

Original languageEnglish (US)
Pages (from-to)1769-1772
Number of pages4
JournalPhysical Review Letters
Volume57
Issue number14
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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