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Title

Highly defective graphene: A key prototype of two-dimensional Anderson insulators

AuthorsLherbier, Aurélien; Roche, Stephan ; Charlier, Jean-Christopher
KeywordsAnderson insulators
Electronic transport
Graphene
Issue Date2013
PublisherSpringer
CitationNano Research 6(5): 326-334 (2013)
AbstractElectronic structure and transport properties of highly defective two-dimensional (2D) sp2 graphene are investigated theoretically. Classical molecular dynamics are used to generate large graphene planes containing a considerable amount of defects. Then, a tight-binding Hamiltonian validated by ab initio calculations is constructed in order to compute quantum transport within a real-space order-N Kubo-Greenwood approach. In contrast to pristine graphene, the highly defective sp2 carbon sheets exhibit a high density of states at the charge neutrality point raising challenging questions concerning the electronic transport of associated charge carriers. The analysis of the electronic wavepacket dynamics actually reveals extremely strong multiple scattering effects giving rise to mean free paths as low as 1 nm and localization phenomena. Consequently, highly defective graphene is envisioned as a remarkable prototype of 2D Anderson insulating materials. © 2013 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.
URIhttp://hdl.handle.net/10261/99371
DOI10.1007/s12274-013-0309-7
Identifiersdoi: 10.1007/s12274-013-0309-7
issn: 1998-0124
e-issn: 1998-0000
Appears in Collections:(CIN2) Artículos
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