Localization and One-Parameter Scaling in Hydrogenated Graphene
arXiv:1003.2041 · doi:10.1103/PhysRevB.81.193412
Abstract
We report a metal-insulator transition in disordered graphene with low coverages of hydrogen atoms. Hydrogen interacting with graphene creates short-range disorder and localizes states near the neutrality point. The energy range of localization grows with increasing of H concentration. Calculations show that the conductances through low-energy propagating channels decay exponentially with sample size and are well fitted by one-parameter scaling function, similar to a disorder-driven metal-insulator transition in 2-dimensional disordered systems.
5 pages, 4 figures
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