Fraunhofer oscillations in a multilayer system with Josephson coupling of layers

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.350· OSTI ID:7276326

Bulaevskii, L N; Clem, J R ^[1]; Glazman, L I ^[2]

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1. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
2. Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

The equations for gauge-invariant phases are obtained for superconductors with Josephson coupling of the layers. Using these equations, we find the condition under which Fraunhofer oscillatory dependence of the critical current on parallel magnetic field {bold H} can be observed in such compounds: The width of the sample along the {ital ab} plane in the direction perpendicular to {bold H} should be smaller than the Josephson length {lambda}{sub {ital J}}={gamma}{sub {ital s}}, where {gamma} is the penetration depth anisotropy ratio and {ital s} is the interlayer spacing. We show that in the presence of weak disorder such oscillations are more pronounced in a multilayer system than in a single Josephson junction with the same level of disorder. We present the expression for the {ital c}-axis critical density that is inherent to the intrinsic interlayer Josephson effect.

• DOE Contract Number: FG02-90ER45427
• OSTI ID: 7276326
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:1; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FRAUNHOFER LINES
GAUGE INVARIANCE
HIGH-TC SUPERCONDUCTORS
INVARIANCE PRINCIPLES
JOSEPHSON EFFECT
OSCILLATIONS
SUPERCONDUCTORS