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Título

Damaging Graphene with Ozone Treatment: A Chemically Tunable Metal−Insulator Transition

AutorLeconte, Nicolás; Moser, Joel ; Ordejón, Pablo ; Tao, Haihua ; Lherbier, Aurélien; Bachtold, Adrian ; Alzina, Francesc ; Sotomayor Torres, C. M. ; Charlier, Jean-Christopher; Roche, Stephan
Palabras claveDisordered graphene
Quantum transport
Metal−insulator transition
Ozone treatment
Numerical simulation
Fecha de publicación2010
EditorAmerican Chemical Society
CitaciónACS Nano 4(7): 4033-4038 (2010)
ResumenWe present a multiscale ab initio study of electronic and transport properties of two-dimensional graphene after epoxide functionalization via ozone treatment. The orbital rehybridization induced by the epoxide groups triggers a strong intervalley scattering and changes dramatically the conduction properties of graphene. By varying the coverage density of epoxide defects from 0.1 to 4%, charge conduction can be tuned from a diffusive to a strongly localized regime, with localization lengths down to a few nanometers long. Experimental results supporting the interpretation as a metal−insulator transition are also provided.
Descripción6 paginas.
Versión del editorhttp://dx.doi.org/10.1021/nn100537z
URIhttp://hdl.handle.net/10261/48620
DOI10.1021/nn100537z
ISSN1936-0851
E-ISSN1936-086X
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