Weak localisation magnetoresistance and valley symmetry in graphene

Simple item page
dc.creatorMcCann, E.
dc.creatorKechedzhi, K.
dc.creatorFal'ko, Vladimir I.
dc.creatorSuzuura, H.
dc.creatorAndo, T.
dc.creatorAltshuler, B. L.
dc.date2006-04-02
dc.date2006-10-17
dc.date.accessioned2026-07-07T07:05:10Z
dc.date.available2026-07-07T07:05:10Z
dc.descriptionDue to the chiral nature of electrons in a monolayer of graphite (graphene) one can expect weak antilocalisation and a positive weak-field magnetoresistance in it. However, trigonal warping (which breaks p/-p symmetry of the Fermi line in each valley) suppresses antilocalisation, while inter-valley scattering due to atomically sharp scatterers in a realistic graphene sheet or by edges in a narrow wire tends to restore conventional negative magnetoresistance. We show this by evaluating the dependence of the magnetoresistance of graphene on relaxation rates associated with various possible ways of breaking a 'hidden' valley symmetry of the system.
dc.descriptionPhys. Rev. Lett. 97, 146805 (2006)
dc.identifierhttps://arxiv.org/abs/cond-mat/0604015
dc.identifierhttp://arxiv.org/abs/cond-mat/0604015
dc.identifierPhys. Rev. Lett. 97, 146805 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.146805
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109580
dc.subjectMesoscale and Nanoscale Physics
dc.titleWeak localisation magnetoresistance and valley symmetry in graphene
dc.typetext

Files

Collections

arXiv