Similarity of (Ga, Al, As) alloys and ultrathin heterostructures: Electronic properties from the empirical pseudopotential method

Wanda Andreoni, Roberto Car

Research output: Contribution to journalArticle

84 Scopus citations

Abstract

The energy-band structures of (GaAs)n(AlAs)m heterostructures with 2n+m8 and of the corresponding virtual-crystal alloys are calculated with the empirical pseudopotential method. Our results indicate that cation order effects do not play a significant role for these heterostructures and can be handled in perturbation theory. Our picture is in agreement with all the available experimental data. The use for heterostructure calculations of empirical pseudopotentials derived from a fit to the band structures of the pure GaAs and AIAs compounds is critically discussed.

Original languageEnglish (US)
Pages (from-to)3334-3344
Number of pages11
JournalPhysical Review B
Volume21
Issue number8
DOIs
StatePublished - Jan 1 1980
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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