Edge scattering in graphene nanoribbons

Details Edge scattering in graphene nanoribbons Edge scattering in graphene nanoribbons

2011-04-27

arxiv.org/abs/1104.5260v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 6 Figures

Scientific paper

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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