Energy gap in layered superconductors

Journal Article · Sat Dec 01 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.10230· OSTI ID:5818121

Bulaevskii, L N ^[1]; Zyskin, M V ^[2]

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1. P. N. Lebedev Physical Institute, Moscow, Academy of Sciences (USSR) Centre de Recherches sur les Tres Basses Temperatures, Centre Nationa l de la Recherche Scientifique, Boite Postale 166X, 38042 Grenoble CEDEX (France)
2. P. N. Lebedev Physical Institute, Moscow Academy of Sciences (USSR)

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 ({ital N}) and superconducting ({ital S}) layers are studied in detail, the {ital N} layers being assumed to have zero pairing intralayer interaction. In {ital S}-{ital N} systems with Josephson coupling of layers, there are two quite different gaps and also different temperature scales of the superconducting properties of the {ital S} and {ital N} layers. The results are used to discuss the behavior of high-{Tc} superconductors and possible artificial superlattices based on these compounds.

• OSTI ID: 5818121
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:16; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BCS THEORY
BLOCH THEORY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COUPLING
ENERGY GAP
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
LAYERS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
SUPERLATTICES
TRANSITION ELEMENT COMPOUNDS