Article ID Journal Published Year Pages File Type
9594475 Surface Science 2005 8 Pages PDF
Abstract
The growth of 2-40 ML Cu on Ag(1 1 1) is investigated using scanning tunnelling microscopy (STM). The surface morphology of this bimetallic system appears to be dominated by Ag segregation. At large Cu coverages, a very moderate annealing favours the segregation process and the formation of characteristic pits penetrating through the Cu film. The segregation effect is evidenced by the (9 × 9) superstructure reported for one Ag monolayer deposited onto Cu(1 1 1). Some holes that penetrate well into the Ag substrate are interpreted as efficient diffusion paths for Ag atoms segregating towards the surface.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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