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dc.contributor.authorMartínez Casado, R.-
dc.contributor.authorVega, J. L.-
dc.contributor.authorSanz, Ángel S.-
dc.contributor.authorMiret-Artés, Salvador-
dc.date.accessioned2013-05-09T07:28:16Z-
dc.date.available2013-05-09T07:28:16Z-
dc.date.issued2007-
dc.identifierdoi: 10.1103/PhysRevLett.98.216102-
dc.identifierissn: 0031-9007-
dc.identifier.citationPhysical Review Letters 98 (21): 216102 (2007)-
dc.identifier.urihttp://hdl.handle.net/10261/75727-
dc.description.abstractThe experimental line shape broadening observed in adsorbate diffusion on metal surfaces with increasing coverage is usually related to the nature of the adsorbate-adsorbate interaction. Here we show that this broadening can also be understood in terms of a fully stochastic model just considering two noise sources: (i) a Gaussian white noise accounting for the surface friction, and (ii) a shot noise replacing the physical adsorbate-adsorbate interaction potential. Furthermore, contrary to what could be expected, for relatively weak adsorbate-substrate interactions the opposite effect is predicted: line shapes get narrower with increasing coverage. © 2007 The American Physical Society.-
dc.description.sponsorshipThis work has been supported in part by DGCYT (Spain) under project FIS2004-02461. R.M.-C. thanks the University of Bochum for support from the Deutsche Forschungsgemeinschaft, SFB 558, for a predoctoral contract.-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.rightsopenAccess-
dc.titleLine shape broadening in surface diffusion of interacting adsorbates with quasielastic He atom scattering-
dc.typeartículo-
dc.identifier.doi10.1103/PhysRevLett.98.216102-
dc.date.updated2013-05-09T07:28:16Z-
dc.description.versionPeer Reviewed-
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