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Two-dimensional electron gas in a uniform magnetic field in the presence of a delta-impurity

R. M. Cavalcanti·C. A. A. de Carvalho
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Abstract

The density of states and the Hall conductivity of a two-dimensional electron gas in a uniform magnetic field and in the presence of a delta impurity are exactly calculated using elementary field theoretic techniques. Although these results are not new, our treatment is explicitly gauge-invariant, and can be easily adapted to other problems involving a delta potential.

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R. M. Cavalcanti, C. A. A. de Carvalho. 1999-08-12. Two-dimensional electron gas in a uniform magnetic field in the presence of a delta-impurity. https://doi.org/10.1088/0305-4470%2F31%2F10%2F014

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