Electronic and optical properties of a superlattice in a parabolic potential

L. Brey, N. F. Johnson, Jed Dempsey

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The electronic and optical properties of a superimposed parabolic and superlattice potential are calculated within the local-density approximation for a range of superlattice periods d. For small d, the properties are similar to those of a parabolic quantum well containing electrons with effective masses corresponding to the underlying superlattice. The effective-mass approximation is valid in this regime. For larger d, the spacing of the ideal-parabolic-well energy levels becomes comparable to the superlattice miniband width, and the effective-mass approximation breaks down.

Original languageEnglish (US)
Pages (from-to)2886-2892
Number of pages7
JournalPhysical Review B
Volume42
Issue number5
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Condensed Matter Physics

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