Campus Units

Physics and Astronomy, Mathematics, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

1989

Journal or Book Title

Physical Review B

Volume

39

Issue

3

First Page

1587

Last Page

1594

DOI

10.1103/PhysRevB.39.1587

Abstract

We consider simple adsorption models describing two systems [H2O on Fe(001) and O2 on Pd(100)] in which c(2×2) short-range order is formed during chemisorption, and metastable saturation states result. This ordering is characterized using concepts from correlated percolation theory. Rapid increases in average domain size near saturation are associated with ‘‘ghost percolation thresholds’’ just above saturation. Generalizing these adsorption models to include an island-forming propensity, α, is shown to move the saturation state closer to c(2×2) percolation. The α→∞ behavior is elucidated by analyzing corresponding ‘‘continuum two-phase grain growth models’’ using ideas from stochastic geometry, continuum, and random lattice percolation theory.

Comments

This article is published as Evans, J. W., and D. E. Sanders. "Percolative c (2× 2) adlayer structure in nonequilibrium adsorption models." Physical Review B 39, no. 3 (1989): 1587, doi:10.1103/PhysRevB.39.1587. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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