Josephson junction using a crossed contact of superconducting Bi(Pb)-Sr-Ca-Cu-O thin film with 110 K-phase

Journal Article · Sat Jun 01 00:00:00 EDT 1991 · Modern Physics Letters B; (Singapore)

DOI:https://doi.org/10.1142/S0217984991001209· OSTI ID:5167637

Higo, S; Imai, M; Hakuraku, Y; Kawano, I; Ogushi, T ^[1]

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1. Dept. of Electronics, Faculty of Engineering, Kagoshima Univ., Kagoshima 890 (JP)

Bi{sub 1.75}Pb{sub 0.17}Sr{sub 2}Ca{sub 2.1}Cu{sub 3.2}O{sub y} thin films with zero resistivity at 115 K, were prepared by dc magnetron sputtering and subsequent high-temperature annealing. This paper reports that Josephson bridges were fabricated b crossed contact of two cleaved planes of the thin films. Self-induced current steps and multi photon-assisted tunneling currents due to quasi-particles tunneling across the oxide gap barriers was due to oxidation of the Cu component and the extrication of Ca near the crossed contact of the thin film by soaking the thin film in liquid nitrogen. It seems possible to fabricate smaller bridge with a single junction by the use of thinner as-grown films with smoother surfaces.

• OSTI ID: 5167637
• Journal Information: Modern Physics Letters B; (Singapore), Journal Name: Modern Physics Letters B; (Singapore) Vol. 5:14; ISSN 0217-9849; ISSN MPLBE
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
COPPER COMPOUNDS
CUPRATES
ELECTRIC BRIDGES
ELECTRICAL EQUIPMENT
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FILMS
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTIONS
LEAD COMPOUNDS
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
OXYGEN COMPOUNDS
SPUTTERING
STRONTIUM COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS