Modeling disorder in graphene

Details Modeling disorder in graphene Modeling disorder in graphene

2007-12-05

arxiv.org/abs/0712.0806v1

Phys. Rev. B 77, 115109 (2008)

Physics

Condensed Matter

Disordered Systems and Neural Networks

16 pages, lower resolution figures

Scientific paper

10.1103/PhysRevB.77.115109

We present a study of different models of local disorder in graphene. Our focus is on the main effects that vacancies -- random, compensated and uncompensated --, local impurities and substitutional impurities bring into the electronic structure of graphene. By exploring these types of disorder and their connections, we show that they introduce dramatic changes in the low energy spectrum of graphene, viz. localized zero modes, strong resonances, gap and pseudogap behavior, and non-dispersive midgap zero modes.

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