摘要:
There is disclosed a thin film superconductor in which the critical current density obtained from the magnitude of diamagnetization measured at 48 K in an outer magnetic field of 150 Oe is more than 3 mill.A/cm². Also, a manufacturing method for the thin film superconductor is disclosed in which photons having energies larger than ultraviolet rays are irradiated to the thin film superconductor on or after formation of the thin film. Further, manufacturing methods for superconductive magnetic memory, Josephson device and superconductive transistor are disclosed.