Critical current of Josephson-coupled systems in perpendicular fields

Journal Article · Mon Feb 22 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.1167· OSTI ID:6817446

Daemen, L L; Bulaevskii, L N; Maley, M P; Coulter, J Y ^[1]

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1. Theoretical Division and Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We calculate the magnetic field and temperature dependence of the critical current density [ital j][sub [ital c]] along the [ital c] axis in Josephson-coupled layered systems when the applied magnetic field is parallel to the [ital c] axis. [ital j][sub [ital c]] decreases with field and temperature because of the thermal fluctuations of the vortices which induce a phase difference across the junctions. The anisotropy ratio [gamma][proportional to]1/ [radical][ital j][sub [ital c]] acquires a field and temperature dependence. The decoupling phase transition line above which the superconducting current along the [ital c] axis vanishes is determined.

• OSTI ID: 6817446
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:8; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
FLUCTUATIONS
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
MAGNETIC FIELDS
MIXED STATE
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
VARIATIONS
VORTICES