THE EMBEDDING METHOD FOR SURFACE-ADSORPTION

We report Preliminary results for the electronic properties of an adso rbate on jellium obtained by solving self-consistently the one-electro n Schrodinger equation within a localized spherical (embedding) region containing the adatom. The extended substrate is taken into account b y an effective potential defined on the surface of the sphere. The cha rge density of the clean surface and of Si on jellium are in excellent agreement with those previously computed by other methods, and we hig hlight the advantages of our new approach to the adsorption problem.