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Silicene versus two-dimensional ordered silicide: Atomic and electronic structure of Si- (19 × 19)R23.4°/Pt(111)

AuthorsSvec, M.; Hapala, P.; OndráAek, M.; Merino, Pedro ; Blanco-Rey, M.; Mutombo, P.; VondráAek, M.; Polyak, Y.; Cháb, V.; Martín-Gago, José A. ; Jelínek, P.
Issue Date28-May-2014
PublisherAmerican Physical Society
CitationPhysical Review B - Condensed Matter and Materials Physics 89 (2014)
AbstractWe discuss the possibility of a two-dimensional ordered structure formed upon deposition of Si on metal surfaces. We investigate the atomic and electronic structure of the Si-(19×19)R23.4°/Pt(111) surface reconstruction by means of a set of experimental surface-science techniques supported by theoretical calculations. The theory achieves very good agreement with the experimental results and is corroborating beyond any doubt that this phase is a surface alloy consisting of Si3Pt tetramers that resembles a twisted kagome lattice. These findings render unlikely any formation of silicene or germanene on Pt(111) and other transition-metal surfaces.
Publisher version (URL)https://doi.org/10.1103/PhysRevB.89.201412
Identifiersdoi: 10.1103/PhysRevB.89.201412
e-issn: 1550-235X
issn: 1098-0121
Appears in Collections:(ICMM) Artículos
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