The behavior of silver on the Si(111) surface has been studied as a function of overlayer coverage and deposition conditions using scanning tunneling microscopy (STM) and low-energy electron diffraction. We examine how the different roles of Ag coverage and thermal annealing history determine surface ordering phenomena and atomic structure in this system. A growth phase diagram based on STM observations is presented. This diagram contains the well-known {}3 ×{} {}3 and 3×{}1 reconstructions, as well as a phase characterized by 5×{}2 periodicity. Possible surface atomic arrangements for each phase are discussed based on the STM observations.
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Wan et al. (1993) studied this question.
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