Submonolayer to monolayer transition in the growth of the Au:InP(110) interface

We have exploited the photoemission matrix elements dependence upon the excitation energy and emission angle to emphasize Au 5d, InP valence band, and P surface state features in a synchrotron radiation spectroscopy investigation of the early stages of formation of the Au/InP(110) interface. The transition from submonolayer to monolayer interface growth consists in the start of atomic intermixing after the saturation of a uniformly chemisorbed Au layer ~ 0.5 monolayers thick.