Regular arrays of one-dimensional Ag stripes can be grown by adsorption and
annealing of Ag on vicinal Cu(III). The Ag adlayer induces a periodic hill
-and-valley nanostructure with alternating A,-covered (112)oriented facets
and clean Cu stepped areas. The superlattice has been studied as a function
of Ag coverage using a wedge (0.34-0.52 monolayers). The width of the Ag s
tripes is constant across the wedge (approximate to 45 Angstrom), such that
the wavelength of the hill-and-valley structure varies from 140 Angstrom t
o 90 Angstrom and the width and step density of the Cu stepped areas is red
uced accordingly. The structure of the Ag-covered stripes is consistent wit
h a rotated, uniaxially compressed, close-packed layer that wets the Cu(112
) plane.