title: Strong suppression of weak localization in graphene.
abstract: Low-field magnetoresistance is ubiquitous in low-dimensional metallic systems with high resistivity and well understood as arising due to quantum interference on self-intersecting diffusive trajectories. We have found that in graphene this weak-localization magnetoresistance is strongly suppressed and, in some cases, completely absent. The unexpected observation is attributed to mesoscopic corrugations of graphene sheets which can cause a dephasing effect similar to that of a random magnetic field.
authors.affiliation: Department of Physics, University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: S V
authors.initials: SV
authors.lastname: Morozov
authors.forename: K S
authors.initials: KS
authors.lastname: Novoselov
authors.forename: M I
authors.initials: MI
authors.lastname: Katsnelson
authors.forename: F
authors.initials: F
authors.lastname: Schedin
authors.forename: L A
authors.initials: LA
authors.lastname: Ponomarenko
authors.forename: D
authors.initials: D
authors.lastname: Jiang
authors.forename: A K
authors.initials: AK
authors.lastname: Geim