| Literature DB >> 21231481 |
S J Altenburg1, J Kröger, B Wang, M-L Bocquet, N Lorente, R Berndt.
Abstract
Graphene on Ru(0001) is contacted with Au tips of a cryogenic scanning tunneling microscope. The formation and conductance of single-atom contacts vary within the moiré unit cell. Density functional calculations reveal that elastic distortions of the graphene lattice occur at contact due to a selectively enhanced chemical reactivity of C atoms at hollow sites of Ru(0001). Concomitant quantum transport calculations indicate that the graphene-Ru distance determines the conductance variations.Entities:
Year: 2010 PMID： 21231481 DOI： 10.1103/PhysRevLett.105.236101
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161