Photoelectron spectroscopy was used to monitor the surface state at 0.3 eV binding energy on W(100) as Au was deposited onto the surface. In contrast with a field-emission result, the surface state was found to be quenched for Au coverages beyond 0.3 monolayer. The discrepancy between the field-emission and photoemission results may be explained by a difference in surface structure.

• Received 8 March 1985

DOI:https://doi.org/10.1103/PhysRevB.32.2640