Infrared Lattice Absorption in Wurtzite GaN

Autor: Takashi Azuhata, Takashi Azuhata, Kazuhiro Shimada, Kazuhiro Shimada, Takahiro Deguchi, Takahiro Deguchi, Takayuki Sota, Takayuki Sota, Katsuo Suzuki, Katsuo Suzuki, Shigefusa Chichibu, Shigefusa Chichibu, Shuji Nakamura, Shuji Nakamura
Zdroj: Japanese Journal of Applied Physics; February 1999, Vol. 38 Issue: 2 pL151-L151, 1p
Abstrakt: Two-phonon absorption spectrum of wurtzite GaN was measured for the first time and was compared with two-phonon density-of-states of zincblende GaN obtained by lattice-dynamical calculations with an adiabatic bond-charge model. All structures in the spectrum were well explained by phonon structures of zincblende GaN. As a method to analyze two-phonon absorption spectra of wurtzite materials, proposed was the utilization of phonon dispersion curves of corresponding zincblende modifications, and the method was found to be useful.
Databáze: Supplemental Index