Geometric magnetoconductance dips by edge roughness in graphene nanoribbons

Hengyi Xu; T. Heinzel; I. V. Zozoulenko

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arXiv · 1112.1806

Geometric magnetoconductance dips by edge roughness in graphene nanoribbons

Hengyi Xu·T. Heinzel·I. V. Zozoulenko

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Abstract

The magnetoconductance of graphene nanoribbons with rough zigzag and armchair edges is studied by numerical simulations. nanoribbons with sufficiently small bulk disorder show a pronounced magnetoconductance minimum at cyclotron radii close to the ribbon width, in close analogy to the wire peak observed in conventional semiconductor quantum wires. In zigzag nanoribbons, this feature becomes visible only above a threshold amplitude of the edge roughness, as a consequence of the reduced current density close to the edges.

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Hengyi Xu, T. Heinzel, I. V. Zozoulenko. 2011-12-08. Geometric magnetoconductance dips by edge roughness in graphene nanoribbons. https://arxiv.org/abs/1112.1806

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