title: Weak localization in bilayer graphene.
abstract: We have performed the first experimental investigation of quantum interference corrections to the conductivity of a bilayer graphene structure. A negative magnetoresistance--a signature of weak localization--is observed at different carrier densities, including the electroneutrality region. It is very different, however, from the weak localization in conventional two-dimensional systems. We show that it is controlled not only by the dephasing time, but also by different elastic processes that break the effective time-reversal symmetry and provide intervalley scattering.
authors.affiliation: School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, United Kingdom.
authors.forename: R V
authors.initials: RV
authors.lastname: Gorbachev
authors.forename: F V
authors.initials: FV
authors.lastname: Tikhonenko
authors.forename: A S
authors.initials: AS
authors.lastname: Mayorov
authors.forename: D W
authors.initials: DW
authors.lastname: Horsell
authors.forename: A K
authors.initials: AK
authors.lastname: Savchenko
mesh_terms: D002244:Carbon / Q000737:chemistry*; D004553:Electric Conductivity; D004583:Electrons; D006108:Graphite / Q000737:chemistry; D008280:Magnetics
chemical_list: D002244:Carbon; D006108:Graphite