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A non-local extension of the Gaspari-Gyorffy theory for superconductors

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Zeitschrift für Physik B Condensed Matter

Abstract

We present a theory which extends the Gaspari-Gyorffy theory to include non-local corrections within the framework of the spherical rigid muffin tin approximation. We thereby construct an on-Fermi-sphere pseudopotential similar to that of the simple free electron metals. We apply our theory to Al and NbC for whichα 2(ω) andT c are calculated. It turns out that for NbC the local approximation works well whereas for Al non-local corrections are important.

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Authors and Affiliations

  1. Institut für Angewandte Kernphysik I, Kernforschungszentrum Karlsruhe GmbH, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    H. Rietschel

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  1. H. Rietschel
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Rietschel, H. A non-local extension of the Gaspari-Gyorffy theory for superconductors. Z Physik B 30, 271–275 (1978). https://doi.org/10.1007/BF01320032

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  • DOI: https://doi.org/10.1007/BF01320032

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