Two-dimensional ordering of chlorine on Ag(100)

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1985

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Taylor, D. E.; Williams, E. D.; Park, R. L.; Bartelt, N. C.; Einstein, T. L., Two-dimensional ordering of chlorine on Ag(100). Physical Review B, 32, 7, 4653-4659, 1985.

Abstract

Chlorine adsorption on Ag(100) saturates at (1/2) monolayer (ML) in a c(2x2) structure. Desorption occurs above 650 K without disordering. The sticking coefficient remains constant to within 0.05 ML of saturation, consistent with the existence of a highly mobile precursor to adsorption. The c(2x2) structure forms at a critical coverage of 0.394+-0.007 ML at room temperature. This is slightly higher than the critical coverage of the hard-square model (0.368 ML), suggesting the influence of further-neighbor interactions.

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