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The O-mediated Cu-film growth on O-precovered Ru(0001) is investigated by means of scanning tunneling microscopy for growth temperatures between 300 and 600 K. Cu-films on clean Ru(0001) grow in a multilayer mode. For O precoverages (Θ) between 0.2 ML (monolayer) and the saturation coverage (Θ=0.5ML), a layer-by-layer growth is observed at growth temperatures between 350 and 450 K. On Cu-islands,...
In order to characterize the disordered O/Cu surfactant layer causing layer-by-layer growth of Cu on O-precovered Ru(0001), an ordered (3x23) O/Cu structure is used as substrate to study further Cu growth. The (3x23) O/Cu structure develops during Cu deposition on O-saturated Ru(0001) at growth temperatures of ca 520K. It was recently interpreted as being composed of separated wave-like O-Cu-O chains...
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