Eur. Phys. J. B (2012) 85: 61
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

Abstract

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.