Electron-phonon interactions in AlxGa1-xAs - non-monotonic dependence upon the alloy composition

Kong-Thon Tsen, D. K. Ferry, A. Salvador, H. Morkoc

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The electron-LO phonon interaction in AlxGa1-xAs has been studied, for the alloy composition ranging from 0.1 to 0.4, by picosecond Raman spectroscopy. We have found that the relative strength of the Frohlich interaction of the two LO phonon modes is a nonlinear function, and increases non-monotonically with the Al composition. The possible origins of these novel results are discussed in term of nonlinear dielectric theory and ordering in the alloy.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages257-265
Number of pages9
ISBN (Print)0819430943
StatePublished - Jan 1 1999
EventProceedings of the 1999 Ultrafast Phenomena in Semiconductors III - San Jose, CA, USA
Duration: Jan 27 1999Jan 29 1999

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3624
ISSN (Print)0277-786X

Other

OtherProceedings of the 1999 Ultrafast Phenomena in Semiconductors III
CitySan Jose, CA, USA
Period1/27/991/29/99

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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