科研之友
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摘要
We study the emergence of strongly correlated states and Kondo physics in disordered graphene. Diluted short-range disorder gives rise to localized midgap states at the vicinity of the system charge neutrality point. We show that long-range disorder, ubiquitous in graphene, allows for the coupling of these localized states to an effective (disorder averaged) metallic band. The system is described by an Anderson-like model. We use the numerical renormalization group method to study the distributions of Kondo temperatures P(T-K). The results show that disorder can lead to long logarithmic tails in P(T-K), consistent with a quantum Griffiths phase.
- 出版日期2014-11-3
