Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN

Leah Bergman, Mitra Dutta, Cengiz Balkas, Robert F. Davis, James A. Christman, Dimitri Alexson, Robert Nemanich

Research output: Contribution to journalArticle

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Abstract

This article presents a study of the quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AlN which originate from the interaction of phonons belonging to the A1 and E1 symmetry groups. In order to analyze the allowed quasi as well as pure Raman modes, the modes were observed in a rotating crystallographic coordinate system, and the Raman tensors of the wurtzite crystal structure were calculated as a function of the crystallographic rotation. The frequencies of the quasimodes of wurtzite AlN were also analyzed in terms of the interaction of the polar phonons with the long range electrostatic field model. The experimental values of the Raman frequencies of the quasiphonons concur with these expected from the model, implying that the long range electrostatic field dominates the short range forces for polar phonons in AlN.

Original languageEnglish (US)
Pages (from-to)3535-3539
Number of pages5
JournalJournal of Applied Physics
Volume85
Issue number7
StatePublished - Apr 1 1999
Externally publishedYes

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wurtzite
phonons
electric fields
interactions
tensors
crystal structure
symmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Bergman, L., Dutta, M., Balkas, C., Davis, R. F., Christman, J. A., Alexson, D., & Nemanich, R. (1999). Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN. Journal of Applied Physics, 85(7), 3535-3539.

Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN. / Bergman, Leah; Dutta, Mitra; Balkas, Cengiz; Davis, Robert F.; Christman, James A.; Alexson, Dimitri; Nemanich, Robert.

In: Journal of Applied Physics, Vol. 85, No. 7, 01.04.1999, p. 3535-3539.

Research output: Contribution to journalArticle

Bergman, L, Dutta, M, Balkas, C, Davis, RF, Christman, JA, Alexson, D & Nemanich, R 1999, 'Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN', Journal of Applied Physics, vol. 85, no. 7, pp. 3535-3539.
Bergman L, Dutta M, Balkas C, Davis RF, Christman JA, Alexson D et al. Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN. Journal of Applied Physics. 1999 Apr 1;85(7):3535-3539.
Bergman, Leah ; Dutta, Mitra ; Balkas, Cengiz ; Davis, Robert F. ; Christman, James A. ; Alexson, Dimitri ; Nemanich, Robert. / Raman analysis of the E1 and A1 quasi-longitudinal optical and quasi-transverse optical modes in wurtzite AIN. In: Journal of Applied Physics. 1999 ; Vol. 85, No. 7. pp. 3535-3539.
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