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

doi:10.1557/s1092578300003422

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

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1 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 language	English (US)
Pages (from-to)	6d
Journal	MRS Internet Journal of Nitride Semiconductor Research
Volume	4
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1557/s1092578300003422
State	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

General Materials Science

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title = "Phonon dynamics and lifetimes of AlN and GaN crystallites",

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.",

author = "Leah Bergman and Dimitri Alexson and Nemanich, {Robert J.} and Mitra Dutta and Stroscio, {Michael A.} and Cengiz Balkas and Davis, {Robert F.}",

year = "1999",

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language = "English (US)",

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T1 - Phonon dynamics and lifetimes of AlN and GaN crystallites

AU - Bergman, Leah

AU - Alexson, Dimitri

AU - Nemanich, Robert J.

AU - Dutta, Mitra

AU - Stroscio, Michael A.

AU - Balkas, Cengiz

AU - Davis, Robert F.

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

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DO - 10.1557/s1092578300003422

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JO - MRS Internet Journal of Nitride Semiconductor Research

JF - MRS Internet Journal of Nitride Semiconductor Research

IS - SUPPL. 1

ER -

Phonon dynamics and lifetimes of AlN and GaN crystallites

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