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dc.contributor.authorPershan, Peter S.
dc.contributor.authorStoltz, S. E.
dc.contributor.authorShpyrko, Oleg G.
dc.contributor.authorDeutsch, Moshe
dc.contributor.authorBalagurusamy, Venkatachalapathy S. K.
dc.contributor.authorMeron, Mati
dc.contributor.authorLin, Binhua
dc.contributor.authorStreitel, Reinhard
dc.date.accessioned2010-02-18T18:22:23Z
dc.date.issued2009
dc.identifier.citationPershan, Peter S., S. E. Stoltz, Oleg G. Shpyrko, Moshe Deutsch, Venkatachalapathy S. K. Balagurusamy, Mati Meron, Binhua Lin, and Reinhard Streite. 2009. Surface structure of liquid Bi and Sn: An x-ray reflectivity study. Physical Review B 79(11): 115417.en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3659692
dc.description.abstractX-ray reflectivity measurements of the liquid Bi surface are presented and analyzed together with previous liquid Sn results. Published measurements on liquid Ga, In, and K all exhibit a single strong maximum at a wave-vector transfer of the order of the reciprocal of an atomic-diameter, due to surface-induced layering. In contrast, both Sn and Bi exhibit—in addition—a weak broad peak at much smaller wave-vector transfers. This feature is an unambiguous signature of an enhanced electron density in the near-surface region. Possible ways of modeling this enhancement are presented. Once the different surface-roughening effects of thermal capillary waves are accounted for, the surface structure factors of Sn and Bi are remarkably similar. The principal difference between the two is that the depth of the layering below the surface is more than ∼40% larger for Bi than for Sn. This is considerably larger than the ratio of their covalent radii which is only ∼10%. No theoretical explanation can be offered at this time for the surface structure difference between Sn and Bi and other elemental liquid metals studied to date: Ga, In, and K.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofdoi:10.1103/PhysRevB.79.115417en_US
dc.relation.hasversionhttp://liquids.seas.harvard.edu/peter/2009.pdf/Bi.pdfen_US
dash.licenseMETA_ONLY
dc.titleSurface Structure of Liquid Bi and Sn: An X-Ray Reflectivity Studyen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalPhysical Review Ben_US
dash.depositing.authorPershan, Peter S.
dash.embargo.until10000-01-01
dc.identifier.doi10.1103/PhysRevB.79.115417*
dash.authorsorderedfalse
dash.contributor.affiliatedStoltz, S. E.
dash.contributor.affiliatedPershan, Peter


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