SUPERCONDUCTING THIN FILM FORMED OF OXIDE SUPERCONDUCTOR MATERIAL, SUPERCONDUCTING CURRENT PATH AND SUPERCONDUCTING DEVICE UTILIZING THE SUPERCONDUCTING THIN FILM

摘要

A superconducting thin film formed on a substrate, comprising an.alpha.-axis orientated oxide superconductor layer, a c-axis orientated oxidesuperconductor layer and an oxide semiconductor layer inserted betweenthe .alpha.-axis orientated oxide superconductor layer and the c-axis orientatedoxide superconductor layer, in contact with them in whichsuperconducting current can flow between the .alpha.-axis orientated oxidesuperconductor layer and the c-axis orientated oxide superconductor layertrough the oxide semiconductor layer by a long-range proximity effect.