Scaling analysis of surface roughness in simple models for Molecular-Beam Epitaxy

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dc.contributor.author Kang, H.
dc.contributor.author Evans, James
dc.contributor.author Evans, James
dc.contributor.department Ames Laboratory
dc.contributor.department Physics and Astronomy
dc.contributor.department Mathematics
dc.contributor.department Chemistry
dc.date 2018-02-18T21:32:22.000
dc.date.accessioned 2020-06-30T06:19:19Z
dc.date.available 2020-06-30T06:19:19Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1992
dc.date.issued 1992
dc.description.abstract <p>There is currently interest in simple models for molecular-beam epitaxy (MBE) which mimic the effect of thermal mobility by allowing immediate incorporation of deposited atoms at kink sites within a distance l of the deposition site. Scaling of the interface width, W, with mean film height, [h], of the form W approximately [h]beta, is analysed. Studies for a solid-on-solid geometry in d = 1 + 1 dimensions revealed a sudden transition from the T = 0 K (l = 0) behavior of beta = 1/2 to a new universality class for l greater-than-or-equal-to 1 with beta = 3/8. We consider the effect of incorporating realistic adsorption-site geometries and deposition dynamics into these d = 1 + 1 MBE models. We find that beta is always less than 3/8 at T = 0 K (l = 0) due to lateral coupling, and that the effective beta increases smoothly with smaller l at least to 3/8. However, for larger l, the simple scaling of W described above breaks down in the physically relevant range of [h].</p>
dc.description.comments <p>This is a manuscript of an article published as Kang, H. C., and J. W. Evans. "Scaling analysis of surface roughness in simple models for molecular-beam epitaxy." <em>Surface Science</em> 269 (1992): 784-789, doi:<a href="http://dx.doi.org/10.1016/0039-6028(92)91349-G" target="_blank">10.1016/0039-6028(92)91349-G</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/physastro_pubs/391/
dc.identifier.articleid 1406
dc.identifier.contextkey 10626556
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath physastro_pubs/391
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/57156
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/physastro_pubs/391/1992_Evans_ScalingAnalysis.pdf|||Fri Jan 14 23:55:30 UTC 2022
dc.source.uri 10.1016/0039-6028(92)91349-G
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Physics
dc.title Scaling analysis of surface roughness in simple models for Molecular-Beam Epitaxy
dc.type article
dc.type.genre article
dspace.entity.type Publication
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