Structure and diffracted intensity in a model for irreversible island‐forming chemisorption with domain boundaries

dc.contributor.author Evans, James
dc.contributor.author Nord, R.
dc.contributor.author Evans, James
dc.contributor.department Ames Laboratory
dc.contributor.department Physics and Astronomy
dc.contributor.department Mathematics
dc.date 2018-02-18T21:38:35.000
dc.date.accessioned 2020-06-30T06:19:29Z
dc.date.available 2020-06-30T06:19:29Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 1987
dc.date.issued 1987
dc.description.abstract <p>Despite the awareness that island‐forming chemisorption is often kinetically limited and intrinsically nonequilibrium, there is little sophisticated analysis of the corresponding island structure or diffracted intensity. Here we analyze a model where species irreversibly and immobilely chemisorb (commensurately) from a precursor source, with distinct rates for island nucleation (chemisorptionin an empty region) and growth (chemisorption at island perimeters), the latter rates being larger. Specifically, we consider the formation of one‐dimensional double‐spaced islands, and two‐dimensional checkerboard C(2×2) islands on a square lattice. In both cases (permanent) domain boundaries form between out‐of‐phase islands. We analyze scaling of the saturation coverage, a characteristiclinear island dimension, spatial correlations, etc., with the ratio of growth to nucleation rates. The structure of individual islands, and of the saturation domain boundary ‘‘network’’ are elucidated. The corresponding diffracted intensity exhibits significant interference at superlattice beams, and diminution at integral order beams as saturation is approached.</p>
dc.description.comments <p>This article is published as Evans, Jo W., and R. S. Nord. "Structure and diffracted intensity in a model for irreversible island‐forming chemisorption with domain boundaries." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 5, no. 4 (1987): 1040-1044, doi:<a href="http://dx.doi.org/10.1116/1.574181" target="_blank">10.1116/1.574181</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/physastro_pubs/410/
dc.identifier.articleid 1429
dc.identifier.contextkey 10635103
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath physastro_pubs/410
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/57178
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/physastro_pubs/410/1987_Evans_StructureDiffracted.pdf|||Sat Jan 15 00:10:14 UTC 2022
dc.source.uri 10.1116/1.574181
dc.subject.disciplines Biological and Chemical Physics
dc.subject.disciplines Physics
dc.subject.keywords Chemisorption
dc.subject.keywords Spatial analysis
dc.subject.keywords Nucleation
dc.subject.keywords Statistical properties
dc.subject.keywords Superlattices
dc.title Structure and diffracted intensity in a model for irreversible island‐forming chemisorption with domain boundaries
dc.type article
dc.type.genre article
dspace.entity.type Publication
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