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Perturbative Evidence of Non-Universality in the Quantized Hall Conductivity of a Disordered Relativistic 2D Electron Gas

We study a relativistic two-dimensional electron gas in the presence of a uniform external magnetic field and a random static scalar potential. We compute, in first order perturbation theory, the averages of the charge density and of the transverse conductivity for a white-noise potential, and show that, within this treatment, their quantized values are modified by the disorder.

preprint1998arXivOpen access
N. BralicC. A. A. de CarvalhoR. M. CavalcantiP. Donatis
cond-mat.mes-hallhep-th
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Open access4 authors2 topics
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N. BralicC. A. A. de CarvalhoR. M. CavalcantiP. Donatis

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