On the specific features of work function coverage dependence for Na adatoms on the Cs substrate

Model based on the simple modification of the Anderson–Newns Hamiltonian is proposed for the description of the adsorption induced work function coverage dependence Df u.. It is shown that the change of Df u. sign for submonolayer coverages u-1 ML.can be attributed to the adsorption bond length alteration. q1999 Elsevier Science B.V. All rights reserved.