Growth and decay of hcp-like Cu hut-shaped structures on W(100)

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dc.contributor.authorBollmann, Tjeerd R. J.
dc.contributor.authorvan Gastel, Raoul
dc.contributor.authorWormeester, Herbert
dc.contributor.authorZandvliet, Harold J. W.
dc.contributor.authorPoelsema, Bene
dc.date.accessioned2021-12-23T16:11:25Z-
dc.date.available2021-12-23T16:11:25Z-
dc.date.issued2012
dc.identifier.issn10980121
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/9690-
dc.description.abstractWe have studied both the morphology and structure of thin Cu deposits on W(100) during growth and desorption, using low-energy electron microscopy (LEEM) and selective area low-energy electron diffraction (mu LEED). During growth at 674 K hut-shaped Cu crystallites with steep facets (>54 degrees) coexist with a pseudomorphic Cu monolayer. The mu LEED data suggest that these crystallites predominantly have a hcp structure with a high density of stacking faults and the (11 (2) over bar0) plane parallel to W(100). The boundaries run along the [(1) over bar 50] azimuth on W(100), which is explained by cancellation of shear stress exerted by Cu on the W(100) surface. Upon slow heating, Cu desorbs and the pseudomorphic wetting layer is transformed into coexisting surface alloy patches, with respectively, a Cu-rich p(2 x 2) and p(2 x 1) structure at 815 K. At about 950 K the islands are fully desorbed, leaving p(2 x 1) footprints behind. The p(2 x 2) patches disappear at about 1020 K, resulting in a homogeneous p(2 x 1) surface. Upon continued Cu desorption this surface transforms into small c(2 x 2) domains until all Cu has been desorbed at 1150 K.
dc.description.sponsorshipNetherlands Organization for Scientific Research (NWO)Netherlands Organization for Scientific Research (NWO); This work is part of the research programme of the Foundation for Fundamental Research on Matter (FOM), which is financially supported by the Netherlands Organization for Scientific Research (NWO).
dc.language.isoen
dc.publisherAMER PHYSICAL SOC
dc.relation.ispartofPHYSICAL REVIEW B
dc.subjectAG
dc.subjectCOPPER
dc.subjectDIFFRACTION
dc.subjectDIFFUSION
dc.subjectFILMS
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectPhysics
dc.subjectPhysics, Applied
dc.subjectPhysics, Condensed Matter
dc.subjectSI(001)
dc.subjectSURFACE ALLOYS
dc.titleGrowth and decay of hcp-like Cu hut-shaped structures on W(100)
dc.typejournal article
dc.identifier.doi10.1103/PhysRevB.85.125417
dc.identifier.isiISI:000301477100006
dc.description.volume85
dc.description.issue12
dc.contributor.orcid0000-0001-6809-139X
dc.contributor.researcheridN-2685-2015
dc.contributor.researcheridB-6167-2013
dc.publisher.placeONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
dcterms.isPartOf.abbreviationPhys. Rev. B
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