Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8204043 | Physics Letters A | 2018 | 6 Pages |
Abstract
Simple scaling consideration and NRG solution of the one- and two-channel Kondo model in the presence of a logarithmic Van Hove singularity at the Fermi level is given. The temperature dependences of local and impurity magnetic susceptibility and impurity entropy are calculated. The low-temperature behavior of the impurity susceptibility and impurity entropy turns out to be non-universal in the Kondo sense and independent of the s-d coupling J. The resonant level model solution in the strong coupling regime confirms the NRG results. In the two-channel case the local susceptibility demonstrates a non-Fermi-liquid power-law behavior.
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Authors
A.K. Zhuravlev, A.O. Anokhin, V.Yu. Irkhin,