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Weak localisation in bilayer graphene

R. V. Gorbachev·F. V. Tikhonenko·A. S. Mayorov·D. W. Horsell·A. K. Savchenko
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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 localisation - is observed at different carrier densities, including the electro-neutrality region. It is very different, however, from the weak localisation 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 invervalley scattering.

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R. V. Gorbachev, F. V. Tikhonenko, A. S. Mayorov, D. W. Horsell, A. K. Savchenko. 2007-04-17. Weak localisation in bilayer graphene. https://doi.org/10.1016/j.physe.2007.09.009

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