ADSORPTION OF NOBLE-GASES ON METAL-SURFACES AND THE SCANNING TUNNELING MICROSCOPE

Physisorption on metal surfaces, and the tunneling currents through th e adsorbed species, are calculated using a unified formalism that pres ents both problems on the same footing. Our method is based on a self- consistent LCAO approach whereby the different interaction parameters defining the bonds, and the tunneling currents, are calculated using t he atomic properties of the atomic species forming the interface. Gree n function methods and the Keldish formalism are used to calculate the different physical properties, We present results for xenon adsorbed on aluminum.