Tail states in clean superconductors with magnetic impurities.

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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 and treating the order parameter self-consistently we show that the density of states is finite everywhere in the superconducting gap, and that it varies as in N(E) {proportional_to} -|E-{Delta}{sub 0}|{sup (7-d)/4} the mean field gap edge {Delta}{sub 0} in a d-dimensional superconductor. In contrast to most studied cases the optimal fluctuation is strongly anisotropic.

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5 p.

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Vekhter, I. (Ilya); Shytov, A. V.; Gruzberg, I. A. & Balatsky, A. V. (Alexander V.) January 1, 2002.

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Description

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 and treating the order parameter self-consistently we show that the density of states is finite everywhere in the superconducting gap, and that it varies as in N(E) {proportional_to} -|E-{Delta}{sub 0}|{sup (7-d)/4} the mean field gap edge {Delta}{sub 0} in a d-dimensional superconductor. In contrast to most studied cases the optimal fluctuation is strongly anisotropic.

Physical Description

5 p.

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  • Submitted to: Conference of Low Temperature Physics

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  • Report No.: LA-UR-02-4386
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976226
  • Archival Resource Key: ark:/67531/metadc929631

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 1:32 p.m.

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Vekhter, I. (Ilya); Shytov, A. V.; Gruzberg, I. A. & Balatsky, A. V. (Alexander V.). Tail states in clean superconductors with magnetic impurities., article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc929631/: accessed January 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.