A microscopic theory for the diffusive and vibrational motion of adsorbed atoms on a solid
surface is presented. We evaluate and analyze the dynamical structure factor and the
velocity autocorrelation function. The quasielastic scattering peak in the dynamical structure
factor is found to consist of mixed contributions from diffusive and vibrational motion. The
vibrational peak indicates a shift and broadening from anharmonic effects and frictional
damping. As the temperature is lowered the diffusion constant crosses over from a …

Dynamics of adatoms on solid surfaces - NASA/ADS … Dynamics of adatoms on solid
surfaces …