Abstract
PAES (Positron Annihilation induced Auger Electron Spectroscopy) intensities from ultrathin Au films deposited at 198 K on Cu(100) were measured as a function of temperature (from 198 K to 348 K) for three different Au coverages. Intermixing of Au and Cu atoms with the increase of temperature was directly monitored. The measurements indicated that the intermixing was not reversible as a function of temperature. EAES (Electron induced Auger Electron Spectroscopy) results were compared with PAES results for each experiment, and the comparison showed the feasibility of PAES over EAES for the study of surface alloy formation as a function of temperature.
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