Surface Resonance on W(100): Effects of Au and Cu Adsorption

Abstract
Measurements of energy-resolved field emission from W(100) show that the surface resonance can exist even in the presence of adsorbed Au and Cu. A cyclical pattern is seen in which the resonance exists only at 0, 1, and 2 monolayers of coverage. A model relating these results to the symmetry of the top partial layer is proposed.