Characteristics of Y-Ba-Cu-O/Nb and Bi-Sr-Ca-Cu-O/Nb tunnel-type Josephson junctions

Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5932028

Nakayama, A ^[1]; Matsui, T; Okabe, Y ^[2]

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1. Dept. of Electrical Engineering, Faculty of Engineering, Kanagawa Univ., 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221 (JP)
2. Research Center for Advanced Science and Technology, Univ. of Tokyo, 4-6-1 Komaba, Maguro-ku, Tokyo 153 (JP)

The authors of this paper fabricated Y-Ba-Cu-O/Nb and Bi-Sr-Ca-Cu-O/Nb tunnel-type junctions and observed the DC and AC Josephson effects. Gold thin films were deposited for an inter-layer to protect the reaction between the base electrode and the tunnel oxide before the tunnel barrier formation. In Y-Ba-Cu-O/Au/MgO{sub x}/Nb junctions, superconducting current, hysteresis of current- voltage characteristics and the rf-induced voltage steps at the voltage as high as 0.13 mV in the current-voltage characteristics were observed. Moreover, the superconducting current has been modulated by the magnetic field. In Bi-Sr- Ca-Cu-O/Au/MgO{sub x}/Nb junctions, superconducting current and the rf-induced voltage steps at the voltage as high as 0.15 mV were also observed.

• OSTI ID: 5932028
• Report Number(s): CONF-900944--
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
ELECTRODES
ELEMENTS
FABRICATION
FILMS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
JUNCTIONS
LAYERS
MAGNETIC FIELDS
METALS
NIOBIUM
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING JUNCTIONS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES