Phonon dynamics and lifetimes of AlN and GaN crystallites

Leah Bergman, Dimitri Alexson, Robert J. Nemanich, Mitra Dutta, Michael A. Stroscio, Cengiz Balkas, Robert F. Davis

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The quasi-LO and quasi-TO modes of AlN crystallite were investigated. The analysis indicates that the Raman mode behavior concurs with Loudons' model of mode-mixing in wurtzite (WZ) structure crystals which is due to the long-range electrostatic field. Phonon-lifetimes of GaN and AlN crystallites were studied via Raman lineshape. It was found that the low energy E2 mode lifetime is about an order of magnitude longer than that of the other modes, and that impurities impact significantly the phonon-lifetimes.

Original languageEnglish (US)
Pages (from-to)6d
JournalMRS Internet Journal of Nitride Semiconductor Research
Volume4
Issue numberSUPPL. 1
StatePublished - Dec 1 1999
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Bergman, L., Alexson, D., Nemanich, R. J., Dutta, M., Stroscio, M. A., Balkas, C., & Davis, R. F. (1999). Phonon dynamics and lifetimes of AlN and GaN crystallites. MRS Internet Journal of Nitride Semiconductor Research, 4(SUPPL. 1), 6d.