Accession Number : ADD014329

Title :   High Quality Tunnel Junction Devices Using High T(c) Superconductors.

Descriptive Note : Patent Application, Filed 30 Jun 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Soulen, Robert J ; Wolf, Stuart A

Report Date : 30 Jun 1989

Pagination or Media Count : 14

Abstract : This invention relates generally to superconducting devices and, specifically, to tunnel junctions and Josephson junctions in superconducting devices. A structure and method for fabricating tunnel junctions from high transition temperature material are disclosed. A tunnel junction consists of three films successively deposited on a substrate: a superconductor, an insulator or normal metal and a superconducting or normal metal. The critical interface is between the superconductor and the insulator or normal metal. Previous attempts to form tunnel junctions have used the upper surface of the superconductor which is invariably rough and inhomogeneous. This invention uses the lower surface which is more epitaxial to fabricate tunnel junctions and Josephson junctions. Patent Applications. (AW)

Descriptors :   *FILMS, *JOSEPHSON JUNCTIONS, *PATENT APPLICATIONS, *SUBSTRATES, *SUPERCONDUCTORS, *TUNNELING(ELECTRONICS), HIGH TEMPERATURE, INTERFACES, JUNCTIONS, MATERIALS, METALS, SURFACES, TRANSITION TEMPERATURE

Subject Categories : Solid State Physics
      Electricity and Magnetism
      Electrical and Electronic Equipment
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE