Disorder-induced gap behavior in graphene nanoribbons

  title={Disorder-induced gap behavior in graphene nanoribbons},
  author={Patrick Gallagher and Kathryn Todd and David Goldhaber-Gordon},
We study the transport properties of graphene nanoribbons of standardized 30 nm width and varying lengths. We find that the extent of the gap observed in transport as a function of Fermi energy in these ribbons the “transport gap” does not have a strong dependence on ribbon length, while the extent of the gap as a function of source-drain voltage the “source-drain gap” increases with increasing ribbon length. We anneal the ribbons to reduce the amplitude of the disorder potential and find that… CONTINUE READING
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