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Unconventional Integer Quantum Hall effect in graphene | | V.P. Gusynin
; S.G. Sharapov
; | | Date: |
22 Jun 2005 | | Journal: | Phys.Rev.Lett. 95 (2005) 146801 DOI: 10.1103/PhysRevLett.95.146801 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall hep-ph | | 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 $sigma_{xy} = - (2 e^2/h)(2n+1)$ with $n=0,1,...$, that 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. | | Source: | arXiv, cond-mat/0506575 | | Services: | Forum | Review | PDF | Favorites | |
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