PRESSURE DETECTION APPARATUS, JOSEPHSON DEVICE, AND SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE THAT INCLUDE SUPERCONDUCTOR THIN FILM THAT UNDERGOES TRANSITION FROM SUPERCONDUCTOR TO INSULATOR BY PRESSURE

摘要

A pressure detection apparatus (30) detects, among a plurality of superconductor thin films (11 to 14) having different critical pressures at which a transition from a superconductor to an insulator occurs, the superconductor thin films (12 to 14) that have undergone the transition to the insulator with ammeters (242, 252, 262); and to detect, as an internal pressure of a housing (10), the maximum critical pressure among the critical pressures of the detected superconductor thin films (12 to 14).