Phonons on GaN(110)

Abstract

We present results of adiabatic bond-charge model calculations for the vibrational properties of the GaN(110) surface using electronic and structural data obtained from a first-principles pseudopotential method. It is found that in order to relate the energy locations of optical phonon modes on this surface with corresponding modes on nonnitride III-V(110) and II-VI(110) surfaces, it is necessary to consider scaling of results with the lattice constant in addition to the reduced mass. (C) 2002 American Institute of Physics.