Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-11-15
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
14 pages, 18 figures, submitted
Scientific paper
10.1103/PhysRevB.84.235420
An efficient computational methodology is used to explore charge transport properties in chemically-modified (and randomly disordered) graphene-based materials. The Hamiltonians of various complex forms of graphene are constructed using tight-binding models enriched by first-principles calculations. These atomistic models are further implemented into a real-space order-N Kubo-Greenwood approach, giving access to the main transport length scales (mean free paths, localization lengths) as a function of defect density and charge carrier energy. An extensive investigation is performed for epoxide impurities with specific discussions on both the existence of a minimum semi-classical conductivity and a crossover between weak to strong localization regime. The 2D generalization of the Thouless relationship linking transport length scales is here illustrated based on a realistic disorder model.
Charlier Jean-Christophe
Leconte Nicolas
Lherbier Aurelien
Ordejon Pablo
Roche Stephan
No associations
LandOfFree
Quantum Transport in Chemically-modified Two-Dimensional Graphene: From Minimal Conductivity to Anderson Localization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum Transport in Chemically-modified Two-Dimensional Graphene: From Minimal Conductivity to Anderson Localization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Transport in Chemically-modified Two-Dimensional Graphene: From Minimal Conductivity to Anderson Localization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-709735