Jr. Power et al., STRONG OPTICAL ANISOTROPY OF THE SINGLE-DOMAIN 5X2-AU RECONSTRUCTION ON VICINAL SI(111), Physical review. B, Condensed matter, 56(7), 1997, pp. 3587-3590
Reflectance anisotropy spectroscopy is applied to metal overlayer grow
th on the silicon (111) surface. Submonolayer coverages of Au are appl
ied to a stepped Si(111) surface. The evolution of the single-domain A
u-induced 5X2 superstructure is seen to produce an optical anisotropy
of considerable amplitude for saturation coverage. The optical anisotr
opy in the region of 2.7 eV is unambiguously assigned to the bonding o
rientation within the 5X2 unit cell.