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dc.contributor.authorPapathanakos, V.en
dc.contributor.authorEvangelakis, G. A.en
dc.date.accessioned2015-11-24T18:34:50Z-
dc.date.available2015-11-24T18:34:50Z-
dc.identifier.issn0039-6028-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/17000-
dc.rightsDefault Licence-
dc.subjectmolecular dynamicsen
dc.subjectadsorption kineticsen
dc.subjectdiffusion and migrationen
dc.subjectepitaxyen
dc.subjectsurface diffusionen
dc.subjectcopperen
dc.subjectgolden
dc.subjectclustersen
dc.subjectmolecular-dynamics simulationsen
dc.subjectmetal 100 surfacesen
dc.subjectisland diffusionen
dc.subjectself-diffusionen
dc.subjectfcc transitionen
dc.subjectnoble-metalsen
dc.subjectir surfacesen
dc.subjectstabilityen
dc.subjectmechanismen
dc.subjectbehavioren
dc.titleStructural and diffusive properties of small 2D Au clusters on the Cu(111) surfaceen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://000174408900016-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0039602801018556/1-s2.0-S0039602801018556-main.pdf?_tid=1a677c79adad3623288df2bb82481970&acdnat=1334219736_7885ec03d52e8a75ac38e99ebc456683-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate2002-
heal.abstractWe present molecular dynamics simulation results concerning the structural and the diffusive properties of small (3-7 atoms) 2D Au clusters on the Cu(1 1 1) surface. We found that in the normal to the surface direction the clusters are expanded, while the surface layer is contracted, depending on the cluster size, these relaxations exhibiting power law temperature dependence. The mean-square displacements of both cluster and surface atoms increase linearly with temperature, while size dependence is found for the cluster atoms. Furthermore, the trajectory analysis revealed a lot of cluster diffusion processes among which concerted motion events, in agreement with available theoretical and experimental data. However, it comes out that the diffusion takes place mainly via mechanisms consisted of a rapid succession of sub-processes, each involving few cluster atoms. Moreover, we calculated the total atomic and cluster diffusion coefficients and we found that they exhibit Arrhenius behaviour, from where we deduced the corresponding activation energies. (C) 2002 Published by Elsevier Science B.V.en
heal.journalNameSurface Scienceen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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