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  • Title: Unconventional integer quantum Hall effect in graphene.
    Author: Gusynin VP, Sharapov SG.
    Journal: Phys Rev Lett; 2005 Sep 30; 95(14):146801. PubMed ID: 16241680.
    Abstract:
    Monolayer graphite films, or graphene, have quasiparticle excitations that can be described by (2+1)-dimensional Dirac theory. We demonstrate that this produces an unconventional form of the quantized Hall conductivity sigma(xy) = -(2e2/h)(2n+1) with n = 0, 1, ..., which notably distinguishes graphene from other materials where the integer quantum Hall effect was observed. This unconventional quantization is caused by the quantum anomaly of the n=0 Landau level and was discovered in recent experiments on ultrathin graphite films.
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