English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/50602
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Electron localization in epitaxial graphene on Ru(0001) determined by moiré corrugation

AuthorsStradi, D.; Díaz, Cristina; Borca, Bogdana; Sánchez-Portal, Daniel CSIC ORCID ; Arnau, Andrés CSIC ORCID; Vázquez de Parga, A. L.
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review B 85(12): 121404(R) (2012)
AbstractThe interpretation of scanning tunneling spectroscopy (STS) and scanning tunneling microscopy measurements of epitaxial graphene on lattice-mismatched substrates is a challenging problem, because of the spatial modulation in the electronic structure imposed by the formation of a moiré pattern. Here we describe the electronic structure of graphene adsorbed on Ru(0001) by means of density functional theory calculations that include van der Waals interactions and are performed on a large 11×11 unit cell to account for the observed moiré patterns. Our results show the existence of localized electronic states in the high and low areas of the moiré at energies close to and well above the Fermi level, respectively. Localization is due to the spatial modulation of the graphene-Ru(0001) interaction and is at the origin of the various peaks observed in STS spectra. © 2012 American Physical Society.
Identifiersdoi: 10.1103/PhysRevB.85.121404
issn: 1098-0121
Appears in Collections:(CFM) Artículos
Files in This Item:
File Description SizeFormat 
Electron localization in epitaxial graphene.pdf547,86 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.