Two-phonon absorption spectra in wurtzite GaN

Takashi Azuhata, Kazuhiro Shimada, Takahiro Deguchi, Takayuki Sota, Katsuo Suzuki, Shigefusa Chichibu, Shuji Nakamura

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Two-phonon absorption spectrum was measured for wurtzite GaN and was compared with two-phonon density of states of zinc-blende GaN obtained by lattice-dynamical calculations with an adiabatic bond-charge model. All structures in the spectrum were well explained by phonon structures of zinc-blende GaN. As a method to analyze two-phonon absorption spectra of wurtzite materials, proposed was the utilization of phonon dispersion curves of corresponding zinc-blende modifications, and the method was found to be useful.

Original languageEnglish
Pages (from-to)2076-2078
Number of pages3
JournalApplied Physics Letters
Issue number14
Publication statusPublished - 1999 Oct 4


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