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Ab initio quantum transport through armchair graphene nanoribbons: Streamlines in the current density

Wilhelm, Jan ; Walz, Michael ; Evers, Ferdinand


We calculate the local current density in pristine armchair graphene nanoribbons (AGNRs) with varying width, NC, employing a density-functional-theory-based ab initio transport formalism. We observe very pronounced current patterns (“streamlines”) with threefold periodicity in NC. They arise as a consequence of quantum confinement in the transverse flow direction. Neighboring streamlines are ...


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