Ab initio calculations of phonon dispersion relations for bulk and image surface of cubic InN Original Research Article

The ground-state structural and dynamical properties of cubic InN and its View the MathML source(110) surface are calculated using density functional theory within the generalised gradient approximation. A detailed discussion is provided for the energy location and atomic displacement pattern for characteristic surface phonon modes at symmetry points and along symmetry lines. The present surface phonon results are used to assess the level of success achieved by the application of an adiabatic bond charge model in a previous publication. By comparing the present results for View the MathML sourceInN(110) with a previous study of View the MathML sourceGaN(110), we are able to conclude that their dynamical behaviour is quite similar.