September 8, 1980
View Full PaperDependence of the He-Scattering Potential at Surfaces on the Surface-Electron-Density Profile
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Abstract
It is shown that the repulsive part of the He-surface interaction is given by an almost linear, surface-independent function of the surface electron density at the He site. This gives a very simple connection between the measured low-energy He-beam scattering potentials and the substrate electron densities. The scheme is applied to an analysis of the He-scattering potential outside Al.