Untersuchung zur Keimbildung von Gold auf NaCl-Einkristallspaltflächen im Ultrahochvakuum

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Abstract
The present paper presents the results of an investigation of the nucleation process during the formation of evaporated gold films on UHV cleaved rocksalt single crystals. The dependence of the nucleation rate and the sticking coefficient on the substrate temperature and deposition rate has been studied in detail. The results are interpreted in terms of a kinetic nucleation model. It is shown that this interpretation based upon atomistic considerations is successful and allows to determine the main model parameters, such as the binding energy of the single atom to the substrate or the activation energy of surface diffusion. An upper limit can be given for the jump distance of the single atom.