Kondo Effect in Fermi Systems with a Gap: A Renormalization Group Study

Details Kondo Effect in Fermi Systems with a Gap: A Renormalization Group Study Kondo Effect in Fermi Systems with a Gap: A Renormalization Group Study

1997-06-27

arxiv.org/abs/cond-mat/9706275v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 10 figures

Scientific paper

10.1103/PhysRevB.57.5225

We present the results of a Wilson Renormalization Group study of the single-impurity Kondo and Anderson models in a system with a gap in the conduction electron spectrum. The behavior of the impurity susceptibility and the zero-frequency response function, $T<>$ are discussed in the cases with and without particle-hole symmetry. In addition, for the asymmetric Anderson model the correlation functions, $<\vec S \cdot\vec \sigma (0)>$,$$, and $$ are computed.

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