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Mobility gaps in disordered graphene-based materials: an ab initio -based tight-binding approach to mesoscopic transport

AuthorsBiel, Blanca; Charlier, Jean-Christopher; Roche, Stephan
Carbon nanotubes
Electronic transport
Electronic structure calculations
Issue DateNov-2010
Citationphysica status solidi (c) 7(11-12): 2628-2631 (2010)
AbstractAs is common knowledge, armchair graphene nanoribbons (aGNRs) share many electronic features with carbon nanotubes (CNTs). Nevertheless, crucial differences emerge when disorder comes into play. It is thus instructive, both from a theoretical and a technological perspective, to analyze the impact of possible types of disorder on the transport properties of these graphene-based materials. Here we report such a comparative study between CNTs and GNRs, which points out the similarities and differences emerging as a consequence of doping by substitutional boron and nitrogen impurities. The role of edge defects (absent in CNTs) is also contrasted with chemical doping disorder. All disorder models have been derived from accurate ab initio calculations of the electronic structures.
Description4 páginas, 5 figuras.-- et al.
Publisher version (URL)http://dx.doi.org/10.1002/pssc.200983826
Appears in Collections:(CIN2) Artículos
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