Compressibility of electron gas in presence of Anderson's impurity

Details Compressibility of electron gas in presence of Anderson's impurity Compressibility of electron gas in presence of Anderson's impurity

1998-08-10

arxiv.org/abs/cond-mat/9808089v1

Physics

Condensed Matter

2 pages, twocolumn

Scientific paper

We employ Wiegmann's solution of the Anderson impurity model in order to
compute the compressibility of electron gas. We have found that there is a pair
of neighbor levels separated by anomalously large energy $\propto L^{-1/3}$,
where $L$ is the size of the system. The Fermi energy crosses this pseudogap
and the compressibility decreases near the so-called ``symmetric'' limit.

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