title: Two-dimensional graphene with structural defects: elastic mean free path, minimum conductivity, and Anderson transition.
abstract: Quantum transport properties of disordered graphene with structural defects (Stone-Wales and divacancies) are investigated using a realistic π-π* tight-binding model elaborated from ab initio calculations. Mean free paths and semiclassical conductivities are then computed as a function of the nature and density of defects (using an order-N real-space Kubo-Greenwood method). By increasing the defect density, the decay of the semiclassical conductivities is predicted to saturate to a minimum value of 4e2/πh over a large range (plateau) of carrier density (>0.5×10(14)  cm(-20). Additionally, strong contributions of quantum interferences suggest that the Anderson localization regime could be experimentally measurable for a defect density as low as 1%.
authors.affiliation: Institute of Condensed Matter and Nanoscience (IMCN), Université Catholique de Louvain (UCL), Louvain-la-Neuve, Belgium.
authors.forename: Aurélien
authors.initials: A
authors.lastname: Lherbier
authors.forename: Simon M-M
authors.initials: SM
authors.lastname: Dubois
authors.forename: Xavier
authors.initials: X
authors.lastname: Declerck
authors.forename: Stephan
authors.initials: S
authors.lastname: Roche
authors.forename: Yann-Michel
authors.initials: YM
authors.lastname: Niquet
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Charlier
mesh_terms: D004058:Diffusion; D004548:Elasticity; D004553:Electric Conductivity; D004583:Electrons; D006108:Graphite / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation
chemical_list: D006108:Graphite