JOSEPHSON ELEMENT

PROBLEM TO BE SOLVED: To provide a Josephson coupling in which a superconductive film and an insulating film are composed of a same material by taking such reality into consideration. SOLUTION: In a Josephson element, the superconductive film and the insulating film are composed of a boron doped dia...

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Bibliographische Detailangaben
Hauptverfasser:	KAWARADA HIROSHI, TAKANO YOSHIHIKO, KONO AKIHIRO, YAMAGUCHI NAOHIDE, WATANABE MEGUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a Josephson coupling in which a superconductive film and an insulating film are composed of a same material by taking such reality into consideration. SOLUTION: In a Josephson element, the superconductive film and the insulating film are composed of a boron doped diamond film. It is characterized in that the boron concentration of the superconductive film is larger than a metal insulator transition concentration (the concentration intrinsic to diamond film) and the boron concentration of the insulating film is smaller than the metal insulator transition concentration, and that the superconducting film and the insulating film are composed of the homoepitaxial diamond film. Further, in the Josephson element, it is characterized in that the boron concentration of the superconductive film is not less than 3x1020cm-3and the boron concentration of the insulating film is less than 3x1020cm-3. COPYRIGHT: (C)2011,JPO&INPIT