Small-area high-current-density Josephson junctions

Journal Article · Sat Dec 01 04:00:00 EST 1979 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.90991· OSTI ID:5762885

Howard, R E; Hu, E L; Jackel, L D; Fetter, L A; Bosworth, R H

Josephson junctions with areas of approx.10/sup -9/ cm/sup 2/ and current densities of 10/sup 5/ A/cm/sup 2/ are described. The junctions were patterned using a combination of optical lithography and oblique evaporation techniques. The junction width is limited by the lithographic resolution to about 1 ..mu..m. The junction length is determined essentially by the base-electrode film thickness and can be as small as 1000 A. The moderate (approx.10 ..cap omega..) normal resistances of these junctions combined with their short intrinsic RC times gives them potential for application in nonlatching Josephson logic and in quasiparticle mm-wave mixers.

• Research Organization: Bell Laboratories Holmdel, New Jersey 07733
• OSTI ID: 5762885
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 35:11; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURRENT DENSITY
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVAPORATION
FABRICATION
FILMS
FREQUENCY CONVERTERS
JOSEPHSON JUNCTIONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RESOLUTION
SUPERCONDUCTING JUNCTIONS
THICKNESS