Photoemission techniques were used to study the electronic properties of two-dimensional islands of Au deposited on Pt(100) in the submonolayer range. Shifts of approximately 0.6 eV were observed in both valence-band and core-level binding energies from Θ=1 to 0.1. These shifts are interpreted in terms of the increasing proportion of island edges as the gold coverage approaches zero. Above Θ=1 the surface-bulk energy shift was found to agree with previously published data.
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Salmerón et al. (1983) studied this question.
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