https://doi.org/10.1140/epjb/e2012-20854-3
Regular Article
Band structure of Au layers on the Ru(0001) and graphene/Ru(0001) surfaces
Institute of Physics of National Academy of Sciences of
Ukraine, Prospect Nauki
46, 03028
Kiev,
Ukraine
a e-mail: yakov@iop.kiev.ua
Received:
19
October
2011
Received in final form:
14
December
2011
Published online:
13
February
2012
The electronic structures of Au monolayers on the Ru(0001) and graphene-coated Ru(0001) surfaces have been calculated by DFT method using the supercell (repeated-slab) approach. The local densities of states (LDOS) and band structures of the monolayer and bilayer Au films adsorbed on the graphene/Ru(0001) and those of free hexagonal Au layers are found to be very similar. This result indicates that the monolayer graphene almost completely screens the Au layers from the Ru(0001) substrate surface, so that electronic properties of Au films adsorbed on graphene are determined predominantly by the electronic structure of the Au adlayers, essentially independent on the electronic structure of the substrate surface.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2012