Adatom kinetics on nonpolar InN surfaces: implications for 1D-Nanostructures growth

The adatom kinetics processes of adsorption and diffusion for In and N species on nonpolar InN a- and m-planes have been studied using ab initio density functional theory calculations. Our results reveal remarkable in-plane anisotropic potential energy surfaces, consistently with experimental data on vertically c-oriented one-dimensional nanostructure formation; we demonstrate that lateral wall morphology strongly determinates the contribution of diffusion to the growth process.