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

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

1997-04-17

arxiv.org/abs/cond-mat/9704156v4

J. Phys. A: Math. Gen. 31 (1998) 2391-2399; 32 (1999) 6119 (Corrigendum)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12+1 pages, 1 ps figure, REVTEX. Corrigendum added

Scientific paper

10.1088/0305-4470/31/10/014

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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