The adsorption and early stages of condensation of Ag and Au on W single-crystal surfaces

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Abstract
Silver and gold were evaporated up to several monolayers in thickness onto W {110} and {100} single‐crystal surfaces in the temperature range between 300 and 1300 °K. The mode of growth and the structure of the layers were studied by Auger electron spectroscopy (AES) and low‐energy electron diffraction (LEED). The results are compared with thermal desorption spectroscopy (TDS) data and work‐function change (Δφ) measurements. They show certain similarities but also some striking differences between the two systems Ag/W and Au/W, and a strong crystallographic anisotropy of adsorption and condensation.