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dc.contributor.author
Bengió, Silvina
dc.contributor.author
Walczak, Łukasz
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Vobornik, Ivana
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Segovia, Pilar
dc.contributor.author
Michel, Enrique G.
dc.date.available
2021-03-05T00:33:47Z
dc.date.issued
2016-04
dc.identifier.citation
Bengió, Silvina; Walczak, Łukasz; Vobornik, Ivana; Segovia, Pilar; Michel, Enrique G.; Evolution of the electronic structure during the epitaxial growth of Au on Pt(100); Elsevier Science; Surface Science; 646; 4-2016; 126-131
dc.identifier.issn
0039-6028
dc.identifier.uri
http://hdl.handle.net/11336/127553
dc.description.abstract
We report an angle-resolved photoemission study of the electronic structure of Au layers grown epitaxially on Pt(100) in the coverage range 1-10 monolayers (ML). Our results include an analysis of the electronic band structure and the Fermi surface, combined with structural information from low-energy electron diffraction. The Au films grow epitaxially with a (1 × 1) pattern up to 4-5 ML. We monitor the electronic band structure near the surface X¯-point vs. Au coverage. In the 1-3 ML range we observe interface electronic states related to the formation of a Au-Pt alloy in this coverage range. Starting at 2-3 ML coverage, we identify quantum well states from the incipient Au sp band, which converge into a bulk like Au sp band near 6 ML. After 5-6 ML, a (1 × 7) pattern is observed, due to the formation of a surface reconstruction in the epitaxial Au film with a topmost hexagonal layer, as in the reconstruction of bulk Au(100). We identify specific electronic states of quasi-one-dimensional character coming from the corrugated hexagonal layer. We obtain a complete picture and understanding of the electronic structure of Au/Pt(100), including sp Au band formation, hybridization and electronic confinement, and with implications in the understanding of the distinct electronic behavior of Au layers and particles in the nm size range.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AU FILM SURFACE
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ELECTRONIC BAND STRUCTURE
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ONE DIMENSIONAL SURFACE STATES
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PT(100)
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QUANTUM WELL STATES
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Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Evolution of the electronic structure during the epitaxial growth of Au on Pt(100)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-26T19:16:50Z
dc.journal.volume
646
dc.journal.pagination
126-131
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Bengió, Silvina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
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Fil: Walczak, Łukasz. Universidad Autónoma de Madrid; España
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Fil: Vobornik, Ivana. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Segovia, Pilar. Universidad Autónoma de Madrid; España
dc.description.fil
Fil: Michel, Enrique G.. Universidad Autónoma de Madrid; España
dc.journal.title
Surface Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.susc.2015.08.026
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0039602815002551
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