Graphene tunable transparency to tunneling electrons
We have shown that scanning tunneling microscopy can selectively visualize either the graphene layer, or the substrate underneath or even both at the same time, providing a comprehensive picture of this coupling with atomic precision and high energy resolution. We demonstrate this for graphene on Cu(111).
ACS Nano 10, 5131 (2016); Article
Point Defects on Graphene on Metals
Our findings demonstrate that even in weakly coupled graphene/metal systems the presence of the metal has to be seriously taken into account in order to controllably tune graphene properties by locally modifying its structure. In particular, we have demonstrated that the interaction with the metal strongly increases when single C vacancies are introduced in the graphene layer, discarding the appealing possibility of inducing magnetic properties on this graphene system by removing C atoms.
Physical Review Letters 107 116803 (2011) Article