Abstract
Using a recently developed many-electron theory, we investigate the velocity dependence of charge transfer probabilities in atom-surface scattering. By analysis of the instantaneous spectral function of the atomic levels, the microscopic origins of non-adiabaticity can be determined. We show that, under certain conditions, intra-atomic correlation effects can introduce novel and non-trivial sources of non-adiabaticity, due to the formation of the Kondo resonance near the Fermi level of the substrate. The narrow width of the Kondo resonance introduces an additional long time scale, which persists even at low velocities.
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