Auger electron spectroscopy, X-ray photoelectron spectroscopy, work function measurements and photoemission of adsorbed xenon on thin films of Pt-Re(111) alloys

Abstract

Auger electron spectroscopy (AES), low energy electron diffraction (LEED) and measurements of the macroscopic work function and the photoemission of adsorbed xenon (PAX) were used to investigate the deposition of 0–15 monolayers of platinum onto an Re(0001) single crystal and subsequent annealing above 1000 K. During deposition, the macroscopic work function reached the bulk value after deposition of 1 monolayer. The PAX and LEED studies indicated that Pt(111) grows epitaxially on Re(0001), which is consistent with the small difference in lattice parameters. Annealing led to the formation of a homogeneous alloy whose work function varied linearly with the platinum content.