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Bulk Josephson energies in multi-gap models of highT c superconductors

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Abstract

Multi-gap models of high temperature ceramic superconductors have been of considerable recent interest. For the case of a two-gap model (Δ1, and Δ2), there exist two separate electron pair condensate reservoirs, and a bulk Josephson free energy can be associated with electron pair transitions from one reservoir to the other. Thus, a “Josephson effect” can exist in two-gap models without the requirement of a weak link separating the two electron pair reservoirs in space. A single bulk sample Josephson electron pair free energy is here derived from the conventional BCS model of the superconducting state.

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Authors and Affiliations

  1. Department of Electrical Engineering, Northeastern University, 02115, Boston, Massachusetts

    C. Vittoria

  2. Department of Physics, Northeastern University, 02115, Boston, Massachusetts

    A. Widom & H. Jiang

Authors
  1. C. Vittoria
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  2. A. Widom
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  3. H. Jiang
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Vittoria, C., Widom, A. & Jiang, H. Bulk Josephson energies in multi-gap models of highT c superconductors. J Supercond 4, 361–364 (1991). https://doi.org/10.1007/BF00618217

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  • DOI: https://doi.org/10.1007/BF00618217

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