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Transition temperature of a two-band superconductor with nonmagnetic impurities

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Abstract

The problem of nonmagnetic impurities in a two-band superconductor has been investigated for the case of strong scattering of a conduction electron from an impurity. We use the Green's function method and introduce at-matrix to treat the scattering. We find that the transition temperatureT c calculated in the present theory differs significantly from its value obtained by using the lowest order Born approximation. In general, the present theory gives a softening of the depression inT c by the impurities.

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Authors and Affiliations

  1. Physics Department, University of Waterloo, Waterloo, Ontario, Canada

    S. Mohabir & A. D. S. Nagi

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  1. S. Mohabir
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  2. A. D. S. Nagi
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Work supported in part by grant No. 4630 of the National Research Council of Canada.

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Mohabir, S., Nagi, A.D.S. Transition temperature of a two-band superconductor with nonmagnetic impurities. J Low Temp Phys 29, 193–204 (1977). https://doi.org/10.1007/BF00655091

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  • DOI: https://doi.org/10.1007/BF00655091

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