In a recent letter [Phys. Rev. Lett. 105 (2010) 036804] the unoccupied electronic states of single layers of graphene on ruthenium are investigated. Here we comment on the interpretation, which deviates in four points from [J. Phys.: Condens. Matter 22 (2010) 302001] and outline the corresponding consequences.
@article{arxiv.1008.1777,
title = {Comment on "Potential Energy Landscape for Hot Electrons in Periodically Nanostructured Graphene"},
author = {H. G. Zhang and T. Greber},
journal= {arXiv preprint arXiv:1008.1777},
year = {2013}
}