Magnetic field dependencies of critical currents in InAs-coupled Josephson junctions

Journal Article · Tue Feb 14 23:00:00 EST 1989 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.342930· OSTI ID:6804491

Inoue, K; Kawakami, T

Magnetic field dependencies of critical currents in InAs-coupled proximity effect Josephson junctions with planar structures are studied from the viewpoint of the self-field effects, magnetic screening, and pair breaking in proximity superconducting InAs. A weak self-field gives a Fraunhofer pattern that shows the usual sinusoidal current-phase relation. The planar geometry must be taken into account when evaluating the Josephson penetration depth lambda/sub J/. For ''large'' junctions (junction width W>>lambda/sub J/), critical currents depend on how the external currents are injected. No magnetic screening was observed in InAs studied by measuring the period of the Fraunhofer pattern. Pair breaking was not observed at least below 20 G either.

• Research Organization: NTT, Electrical Communications Laboratories, Musashino-shi, Tokyo 180, Japan
• OSTI ID: 6804491
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 65:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARSENIC COMPOUNDS
ARSENIDES
CRITICAL CURRENT
CURRENTS
DATA
ELECTRIC CURRENTS
EXPERIMENTAL DATA
FABRICATION
INDIUM ARSENIDES
INDIUM COMPOUNDS
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
NUMERICAL DATA
PNICTIDES
SUPERCONDUCTING JUNCTIONS