Abstract

Surface and bulk sensitive Si2p and Ga3d photoelectron spectra have been measured for the 3 × 3 -Ga surface. Only a single surface Si2p component and a single Ga3d component are found for the 3 × 3 -Ga surface from a nonlinear least-squares analysis. These findings are consistent with the threefold-hollow 1/3 ML adatom models proposed for the 3 × 3 -Ga III metal surfaces.

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