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Title

Anisotropic behavior of quantum transport in graphene superlattices: Coexistence of ballistic conduction with Anderson insulating regime

AuthorsGoor Pedersen, Jesper; Cummings, Aron W.; Roche, Stephan
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review B 89(16): 165401 (2014)
AbstractWe report on the possibility to generate highly anisotropic quantum conductivity in disordered graphene-based superlattices. Our quantum simulations, based on an efficient real-space implementation of the Kubo-Greenwood formula, show that in disordered graphene superlattices the strength of multiple scattering phenomena can strongly depend on the transport measurement geometry. This eventually yields the coexistence of a ballistic waveguide and a highly resistive channel (Anderson insulator) in the same two-dimensional platform, evidenced by a σyy/σxx ratio varying over several orders of magnitude, and suggesting the possibility of building graphene electronic circuits based on the unique properties of chiral massless Dirac fermions in graphene. © 2014 American Physical Society.
DescriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.89.165401
URIhttp://hdl.handle.net/10261/126794
DOI10.1103/PhysRevB.89.165401
Identifiersdoi: 10.1103/PhysRevB.89.165401
issn: 1098-0121
e-issn: 1550-235X
Appears in Collections:(CIN2) Artículos
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