Forward Raman scattering by quasilongitudinal optical phonons in GaN

T. Azuhata, M. Ono, K. Torii, Takayuki Sota, S. F. Chichibu, S. Nakamura

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    Abstract

    Quasilongitudinal optical phonons in wurtzite GaN have been studied by Raman spectroscopy in the forward scattering geometry with annular apertures. It is demonstrated that the geometry is simple and powerful for determining frequency variation of quasilongitudinal optical phonons in a relatively wide range of their propagation directions, over which the quasilongitudinal optical phonon frequency changes remarkably. Good agreement is obtained between experimental and theoretical results. Discussion is also given on selection rules for quasilongitudinal optical phonons, which are used to interpret polarized Raman signals.

    Original languageEnglish
    Pages (from-to)5202-5205
    Number of pages4
    JournalJournal of Applied Physics
    Volume88
    Issue number9
    Publication statusPublished - 2000 Nov 1

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    ASJC Scopus subject areas

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

    Cite this

    Azuhata, T., Ono, M., Torii, K., Sota, T., Chichibu, S. F., & Nakamura, S. (2000). Forward Raman scattering by quasilongitudinal optical phonons in GaN. Journal of Applied Physics, 88(9), 5202-5205.