Cation interdiffusion in GaAs-AlAs superlattices measured with Raman spectroscopy

J. Grant, Jose Menendez, L. N. Pfeiffer, K. W. West, E. Molinari, S. Baroni

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

A combined Raman and ab initio lattice dynamical study of ultrathin (GaAs)4(AlAs)4 superlattices, focusing mainly on AlAs-like vibrations, clearly shows that a significant amount of interdiffusion occurs in these samples when grown at conventional molecular-beam epitaxy temperatures between 580 and 640 °C. At these temperatures, growth interruption is found to have little impact on the structural quality of the superlattices.

Original languageEnglish (US)
Pages (from-to)2859-2861
Number of pages3
JournalApplied Physics Letters
Volume59
Issue number22
DOIs
StatePublished - Dec 1 1991

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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