Abstract.
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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Kechedzhi, K., McCann, E., Fal'ko, V. et al. Weak localization in monolayer and bilayer graphene. Eur. Phys. J. Spec. Top. 148, 39–54 (2007). https://doi.org/10.1140/epjst/e2007-00224-6
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DOI: https://doi.org/10.1140/epjst/e2007-00224-6