We have studied the evolution of the low-lying unoccupied Ag5p-derived electron states at the Ag/Si(111)2 × 1 interface as a function of the Ag coverage via (l→(l-1)) AgM4,5X-ray absorption spectroscopy. The measured line-shapes are discussed in terms of a transition of the overgrown adlayer from two- to three-dimensional character. © 1993.
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