Tail states in superconductors with weak magnetic impurities

I. Vekhter; A. V. Shytov; I. A. Gruzberg; A. V. Balatsky

doi:10.1016/S0921-4526(02)02372-4

Tail states in superconductors with weak magnetic impurities

Superconductivity 2015-06-24 v2 Strongly Correlated Electrons

Authors: I. Vekhter , A. V. Shytov , I. A. Gruzberg , A. V. Balatsky

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Abstract

We analyse the behavior of the density of states in a singlet s-wave superconductor with weak magnetic impurities in the clean limit by using the method of optimal fluctuation. We show that the density of states varies as $\ln N(E)\propto -|E-\Delta_0|^{(7-d)/4}$ near the mean field gap edge $\Delta_0$ in a d-dimensional superconductor. The optimal fluctuation in d>1 is strongly anisotropic. We compare the density of states with that obtained in other recent approaches.

Keywords

density of states magnetic impurities optimal fluctuation singlet s-wave superconductor mean field gap edge

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@article{arxiv.cond-mat/0210421,
  title  = {Tail states in superconductors with weak magnetic impurities},
  author = {I. Vekhter and A. V. Shytov and I. A. Gruzberg and A. V. Balatsky},
  journal= {arXiv preprint arXiv:cond-mat/0210421},
  year   = {2015}
}

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2 pages, to appear in Proceedings of LT-23; (v2) some affiliations changed

Tail states in superconductors with weak magnetic impurities

Abstract

Keywords

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