Weak localization in monolayer and bilayer graphene

Details Weak localization in monolayer and bilayer graphene Weak localization in monolayer and bilayer graphene

2009-03-10

arxiv.org/abs/0903.1848v1

Eur. Phys. J. Special Topics 148, 39-54 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

corrected misprints present in the published version

Scientific paper

We describe the weak localization correction to conductivity in ultra-thin graphene films, taking into account disorder scattering and the influence of trigonal warping of the Fermi surface. A possible manifestation of the chiral nature of electrons in the localization properties is hampered by trigonal warping, resulting in a suppression of the weak anti-localization effect in monolayer graphene and of weak localization in bilayer graphene. Intervalley scattering due to atomically sharp scatterers in a realistic graphene sheet or by edges in a narrow wire tends to restore weak localization resulting in negative magnetoresistance in both materials.

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