On the effect of far impurities on the density of states of two-dimensional electron gas in a strong magnetic field
arXiv:cond-mat/0307077 · doi:10.1134/1.1618883
Abstract
The effect of impurities situated at different distances from a two-dimensional electron gas on the density of states in a strong magnetic field is analyzed. Based on the exact result of Brezin, Gross, and Itzykson, we calculate the density of states in the whole energy range, assuming the Poisson distribution of impurities in the bulk. It is shown that in the case of small impurity concentration the density of states is qualitatively different from the model case when all impurities are located in the plane of the two-dimensional electron gas.
arXiv comment6 pages, 1 figure, submitted to JETP Letters
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