Y-Ba-Cu-O/Nb Josephson tunnel junctions

Conference · Wed Mar 01 00:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:6091475

Nakayama, A; Ito, H; Inoue, A; Takeuchi, K; Okabe, Y

The authors have fabricated Y-Ba-Cu-O/Au/AlO/sub x//Nb and Y-Ba-Cu-O/AlO/sub x//Nb Josephson tunnel junctions using electron-beam evaporation of Al and Nb films and natural oxidation. Sintered Y-Ba-Cu-O have been used as base electrode. Superconducting Josephson current and hysteresis of current-voltage characteristics, which are typical features of Josephson tunnel junctions, have been observed at 4.2 K. Rf-induced voltage steps at the voltage greater than 0.4 mV have been clearly observed and rf-induced subharmonic steps have also appeared. Moreover, the Superconducting Josephson current has been modulated by magnetic field.

• Research Organization: Dept. of Electrical Engineering, Kanagawa Univ., 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama (JP); Dept. of Electronic Engineering, Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo (JP)
• OSTI ID: 6091475
• Report Number(s): CONF-880812-
• Journal Information: IEEE Trans. Magn.; (United States), Vol. 25:2; Conference: Applied superconductivity conference, San Francisco, CA, USA, 21 Aug 1988
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ALUMINIUM
SUPERCONDUCTING FILMS
JOSEPHSON JUNCTIONS
FABRICATION
NIOBIUM
ELECTRON BEAM INJECTION
OXIDATION
PERFORMANCE
RF SYSTEMS
SINTERING
BEAM INJECTION
CHEMICAL REACTIONS
ELEMENTS
FILMS
JUNCTIONS
METALS
SUPERCONDUCTING JUNCTIONS
TRANSITION ELEMENTS
420201* - Engineering- Cryogenic Equipment & Devices
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)
360201 - Ceramics
Cermets
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360204 - Ceramics
Cermets
& Refractories- Physical Properties