title: Weak localization in graphene: theory, simulations, and experiments.
abstract: We provide a comprehensive picture of magnetotransport in graphene monolayers in the limit of nonquantizing magnetic fields. We discuss the effects of two-carrier transport, weak localization, weak antilocalization, and strong localization for graphene devices of various mobilities, through theory, experiments, and numerical simulations. In particular, we observe a minimum in the weak localization and strong localization length reminiscent of the minimum in the conductivity, which allows us to make the connection between weak and strong localization. This provides a unified framework for both localizations, which explains the observed experimental features. We compare these results to numerical simulation and find a remarkable agreement between theory, experiment, and numerics. Various graphene devices were used in this study, including graphene on different substrates, such as glass and silicon, as well as low and high mobility devices.
authors.affiliation: Department of Physics, McGill University, Montreal, QC, Canada H3A 2T8.
authors.forename: Michael
authors.initials: M
authors.lastname: Hilke
authors.affiliation: Institute of Photonic Sciences, Castelldefels, 08860 Barcelona, Spain.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Massicotte
authors.affiliation: Department of Physics, McGill University, Montreal, QC, Canada H3A 2T8.
authors.forename: Eric
authors.initials: E
authors.lastname: Whiteway
authors.affiliation: Department of Physics, McGill University, Montreal, QC, Canada H3A 2T8.
authors.forename: Victor
authors.initials: V
authors.lastname: Yu
mesh_terms: D006108:Graphite / Q000737:chemistry*; D060526:Magnetic Fields; D008962:Models, Theoretical
chemical_list: D006108:Graphite