Conductance quantization and transport gaps in disordered graphene nanoribbons

    Authors

    E. R. Mucciolo; A. H. C. Neto;C. H. Lewenkopf

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abstract

    We study numerically the effects of edge and bulk disorder on the conductance of graphene nanoribbons. We compute the conductance suppression due to Anderson localization induced by edge scattering and find that even for weak edge roughness, conductance steps are suppressed and transport gaps are induced. These gaps are approximately inversely proportional to the nanoribbon width. On/off conductance ratios grow exponentially with the nanoribbon length. Our results impose severe limitations to the use of graphene in ballistic nanowires.

    Journal Title

    Physical Review B

    Volume

    79

    Issue/Number

    7

    Publication Date

    1-1-2009

    Document Type

    Article

    WOS Identifier

    WOS:000263815800087

    ISSN

    1098-0121

    Share

    COinS