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

Kan Chen; C. Jayaprakash

doi:10.1103/PhysRevB.57.5225

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

Strongly Correlated Electrons 2009-10-30 v1

Authors: Kan Chen , C. Jayaprakash

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Abstract

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, $T<<S_z; S_z>>$ are discussed in the cases with and without particle-hole symmetry. In addition, for the asymmetric Anderson model the correlation functions, $<\vec S \cdot\vec \sigma (0)>$ , $<n_d>$ , and $<n_d(2-n_d)>$ are computed.

Keywords

kondo effect quantum impurity physics

Cite

@article{arxiv.cond-mat/9706275,
  title  = {Kondo Effect in Fermi Systems with a Gap: A Renormalization Group Study},
  author = {Kan Chen and C. Jayaprakash},
  journal= {arXiv preprint arXiv:cond-mat/9706275},
  year   = {2009}
}

Comments

10 pages, 10 figures

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