Gunnarsson O., Schonhammer K.
The authors calculate the dynamic susceptibility chi ( omega ) in the Anderson impurity model, using a 1/Nf expansion, where Nf is the degeneracy of the f-level. For Nf to infinity the Shiba Fermi liquid relation is satisfied. In this limit Im chi ( omega )/ omega has a very steep rise at omega =TK, the Kondo temperature. An interpretation for this rise is given. Crystal-field and spin-orbit splittings have also been included.
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