Line Shape Broadening in Surface Diffusion of Interacting Adsorbates with Quasielastic He Atom Scattering

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dc.creatorMartinez-Casado, R.
dc.creatorVega, J. L.
dc.creatorSanz, A. S.
dc.creatorMiret-Artes, S.
dc.date2007-02-08
dc.date2007-05-24
dc.date.accessioned2026-07-07T08:05:46Z
dc.date.available2026-07-07T08:05:46Z
dc.descriptionThe 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.
dc.description4 pages, 2 figures (slightly revised version)
dc.identifierhttps://arxiv.org/abs/cond-mat/0702219
dc.identifierhttp://arxiv.org/abs/cond-mat/0702219
dc.identifierPhys. Rev. Lett. 98, 216102 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.216102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/130383
dc.subjectStatistical Mechanics
dc.subjectMaterials Science
dc.subjectQuantum Physics
dc.titleLine Shape Broadening in Surface Diffusion of Interacting Adsorbates with Quasielastic He Atom Scattering
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