Interaction of rare gases with (111) germanium crystal plane

Abstract

Adsorption potentials have been calculated for Ar, Kr and Xe adsorbed on the (111) germanium surface plane.

Apart from dispersion and repulsion contributions, electrostatic interactions arising from trapped electrons on the surface were included in the potential. The contribution from this interaction (induced dipole–electric field) appears to be of much importance; the calculated heats of adsorption resemble the experimental results closely.