Energy gap in layered superconductors

L. N. Bulaevskii and M. V. Zyskin
Phys. Rev. B 42, 10230 – Published 1 December 1990
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Abstract

The anisotropy of the gap in layered compounds is studied in the framework of the BCS model, taking into account the interlayer and different intralayer couplings in the system. The compounds with alternating normal (N) and superconducting (S) layers are studied in detail, the N layers being assumed to have zero pairing intralayer interaction. In S-N systems with Josephson coupling of layers, there are two quite different gaps and also different temperature scales of the superconducting properties of the S and N layers. The results are used to discuss the behavior of high-Tc superconductors and possible artificial superlattices based on these compounds.

  • Received 1 June 1990

DOI:https://doi.org/10.1103/PhysRevB.42.10230

©1990 American Physical Society

Authors & Affiliations

L. N. Bulaevskii

  • P. N. Lebedev Physical Institute, Moscow, Academy of Sciences, U.S.S.R.
  • Centre de Recherches sur les Très Basses Températures, Centre Nationa l de la Recherche Scientifique, Boîte Postale 166X, 38042 Grenoble CEDEX, France

M. V. Zyskin

  • P. N. Lebedev Physical Institute, Moscow Academy of Sciences, U.S.S.R.

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Issue

Vol. 42, Iss. 16 — 1 December 1990

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