METAL ULTRATHIN FILM SUPERCONDUCTOR AND MICRODISPLACEMENT MEASURING DEVICE USING MAGNETIC FIELD

摘要

PROBLEM TO BE SOLVED: To raise a transition temperature up to room temperatures using a metal or metal-state ultrathin film as a superconductivity is generated in the direction of the film surface of the ultrathin film in a structure of a dielectric body/the metal or metallic ultrathin film/a dielectric body, but in this case, the thinnner the film is, the higher this transition temperature to become the superconductivity transition temperature rises. ;SOLUTION: A superconductivity transition temperature has hitherto been 120K or thereabouts, but the superconductivity transition temperature of a metal or metal-state ultrathin film of a thickness thinner than one micron meter (μm) is heightened until room temperatures (23 to 25°C, roughly 300K) in this method. The generation of a Meissner effect is ascertained in addition to a quenching of an electrical resistance and a room temperature superconductivity has already been verified. Moreover, in order to measure the Meissner effect, a device for measuring a microdisplacement in a magnetic field using a laser displacement meter is manufactured. The quenching of the electrical resistance and the generation of the Meissner effect show the fact that the above ultrathin film is turned into a superconductor.;COPYRIGHT: (C)2000,JPO