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Impact of Vacancies on Diffusive and Pseudodiffusive Electronic Transport in Graphene
Institut de Microélectronique Electromagnétisme et Photonique et le LAboratoire d'Hyperfréquenceset de Caractérisation, IMEP-LAHC (UMR CNRS/INPG/UJF 5130), Grenoble INP Minatec, 3, ParvisLouis Nèel, BP 257, Grenoble F-38016, France
Catalan Institute of Nanotechnology (CIN2), Universitat Autónoma de Barcelona, Campus UAB,Bellaterra 08193, Spain
Ecole Normale Superieure de Lyon, 46, Allée d'Italie, Lyon 69007, France
Institute of Physics, Technical University of Lodz, ul. Wolczanska 219, Lodz 93-005, Poland
Barcelona Supercomputing Center (BSC), C/Jordi Girona 29, Barcelona E-08034, Spain
Institució Catalana de Recerca i Estudis Avanc¸ats (ICREA), Barcelona 08070, Spain
* Authors to whom correspondence should be addressed.
Received: 7 March 2013; Accepted: 1 April 2013 / Published: 8 April 2013
(This article belongs to the Special Issue Graphenes
Abstract: We present a survey of the effect of vacancies on quantum transport in graphene, exploring conduction regimes ranging from tunnelling to intrinsic transport phenomena. Vacancies, with density up to 2%, are distributed at random either in a balanced manner between the two sublattices or in a totally unbalanced configuration where only atoms sitting on a given sublattice are randomly removed. Quantum transmission shows a variety of different behaviours, which depend on the specific system geometry and disorder distribution. The investigation of the scaling laws of the most significant quantities allows a deep physical insight and the accurate prediction of their trend over a large energy region around the Dirac point.
Keywords: graphene; vacancies; quantum transport
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Cresti, A.; Louvet, T.; Ortmann, F.; Van Tuan, D.; Lenarczyk, P.; Huhs, G.; Roche, S. Impact of Vacancies on Diffusive and Pseudodiffusive Electronic Transport in Graphene. Crystals 2013, 3, 289-305.
Cresti A, Louvet T, Ortmann F, Van Tuan D, Lenarczyk P, Huhs G, Roche S. Impact of Vacancies on Diffusive and Pseudodiffusive Electronic Transport in Graphene. Crystals. 2013; 3(2):289-305.
Cresti, Alessandro; Louvet, Thibaud; Ortmann, Frank; Van Tuan, Dinh; Lenarczyk, Paweł; Huhs, Georg; Roche, Stephan. 2013. "Impact of Vacancies on Diffusive and Pseudodiffusive Electronic Transport in Graphene." Crystals 3, no. 2: 289-305.