Percolative c(2×2) adlayer structure in nonequilibrium adsorption models Evans, James Sanders, D. Evans, James
dc.contributor.department Ames National Laboratory
dc.contributor.department Physics and Astronomy
dc.contributor.department Mathematics 2018-02-18T21:37:03.000 2020-06-30T06:19:34Z 2020-06-30T06:19:34Z Sun Jan 01 00:00:00 UTC 1989 1989
dc.description.abstract <p>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 <em>during</em> 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, <em>α</em>, is shown to move the saturation state closer to c(2×2) percolation. The <em>α→∞</em> behavior is elucidated by analyzing corresponding ‘‘continuum two-phase grain growth models’’ using ideas from stochastic geometry, continuum, and random lattice percolation theory.</p>
dc.description.comments <p>This article is published as Evans, J. W., and D. E. Sanders. "Percolative c (2× 2) adlayer structure in nonequilibrium adsorption models." <em>Physical Review B</em> 39, no. 3 (1989): 1587, doi:<a href="" target="_blank">10.1103/PhysRevB.39.1587</a>. Posted with permission.</p>
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dc.identifier.articleid 1418
dc.identifier.contextkey 10634763
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dc.language.iso en
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dc.source.uri 10.1103/PhysRevB.39.1587
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Physics
dc.title Percolative c(2×2) adlayer structure in nonequilibrium adsorption models
dc.type article
dc.type.genre article
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