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

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

1998-04-21

arxiv.org/abs/cond-mat/9804222v2

Mod. Phys. Lett. B 12, 319-325 (1998).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

ReVTeX, 7 pages, 1 ps figure. To appear in Mod. Phys. Lett. B. The last reference was corrected

Scientific paper

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.

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