Lattice dynamics of wurtzite semiconductors GaN and AlN

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, , Citation Wei Guang-hong et al 1998 Acta Phys. Sin. (Overseas Edn) 7 841 DOI 10.1088/1004-423X/7/11/006

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1 Surface Physics Laboratory, Fudan University, Shanghai 200433, China

Dates

  1. Received 17 December 1997
1004-423X/7/11/841

Abstract

The lattice dynamics of wurtzite GaN and AlN is studied within the framework of a rigidion model. Short-range interactions up to the third nearest neighbors are described by using a valence-force-field potential and the long-range Coulomb interactions between ions are calculated via an Ewald summation. Phonon dispersion curves, density of states and specific heats are presented.

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