{ital I}{sub {ital c}R}{sub {ital n}} product in {ital c}-axis Josephson junctions involving high-temperature superconductors

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.12552· OSTI ID:124333

Ledvij, M; Klemm, R A ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The Josephson coupling between a conventional and a high-temperature superconductor is investigated theoretically for the case in which the high-{ital T}{sub {ital c}} superconductor with its {ital c} axis perpendicular to the junction has a layer with a significantly depleted order parameter. If that layer is in contact with the junction barrier, it is demonstrated that the product of the junction resistance {ital R}{sub {ital n}} and the critical current {ital I}{sub {ital c}} can be substantially reduced from the standard Ambegaokar-Baratoff value. The result is discussed in connection with recent experiments aimed at exploring the symmetry of the order parameter in high-temperature superconductors.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 124333
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 52; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CRITICAL CURRENT
ELECTRIC CONDUCTIVITY
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
ORDER PARAMETERS
SYMMETRY
TUNNELING