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arXiv · 1104.5260

Coherent transport through graphene nanoribbons in the presence of edge disorder

F. Libisch·S. Rotter·J. Burgdörfer
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Abstract

We simulate electron transport through graphene nanoribbons of experimentally realizable size (length L up to 2 micrometer, width W approximately 40 nm) in the presence of scattering at rough edges. Our numerical approach is based on a modular recursive Green's function technique that features sub-linear scaling with L of the computational effort. We identify the influence of the broken A-B sublattice (or chiral) symmetry and of K-K' scattering by Fourier spectroscopy of individual scattering states. For long ribbons we find Anderson-localized scattering states with a well-defined exponential decay over 10 orders of magnitude in amplitude.

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F. Libisch, S. Rotter, J. Burgdörfer. 2011-04-27. Coherent transport through graphene nanoribbons in the presence of edge disorder. https://doi.org/10.1088/1367-2630/14/12/123006

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