Abstract
We have investigated the lattice dynamics of the (1 1 0) surface of AlSb and GaP by employing the adiabatic bond-charge model and using the atomic geometry obtained from ab initio pseudopotential calculations. The results for both surfaces are in very good overall agreement with a recent high-resolution electron-energy-loss spectroscopy experiment and an ab initio calculation. The differences between the dynamical properties of these surfaces are correlated to the cation/anion mass ratios.
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