Driving forces for Ag-induced periodic faceting of vicinal Cu(111)

Details Driving forces for Ag-induced periodic faceting of vicinal Cu(111) Driving forces for Ag-induced periodic faceting of vicinal Cu(111)

2002-10-02

arxiv.org/abs/cond-mat/0210051v1

Physics

Condensed Matter

Materials Science

1 text, 4 figures

Scientific paper

10.1016/S0039-6028(02)02574-8

Adsorption of submonolayer amounts of Ag on vicinal Cu(111) induces periodic faceting. The equilibrium structure is characterized by Ag-covered facets that alternate with clean Cu stripes. In the atomic scale, the driving force is the matching of Ag(111)-like packed rows with Cu(111) terraces underneath. This determines the preference for the facet orientation and the evolution of different phases as a function of coverage. Both Cu and Ag stripe widths can be varied smoothly in the 3-30 nm range by tuning Ag coverage, allowing to test theoretical predictions of elastic theories.

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