Accession Number : ADD017343

Title :   Josephson Break Junction Thin Film Device.

Descriptive Note : Patent, Filed 10 Oct 91, Patented 27 Dec 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Perez, Ignacio M ; Scott, William R

Report Date : 27 Dec 1994

Pagination or Media Count : 9

Abstract : A Josephson break junction device suitable for highly sensitive electronic detecting systems. A superconductor film such as YBa2Al3O7 is deposited on a substrate such as a single-crystal MgO. The film is fractured across a narrow strip by at least one indentation in the substrate juxtaposed from the strip to form a break junction. A transducer is affixed to the substrate for applying a bending movement to the substrate to regulate the distance across the gap formed at the fracture to produce a Josephson turned junction effect. Alternatively or in addition to the transducer, a bridge of a nobel metal is applied across the gap to produce a weak- link junction. jg

Descriptors :   *THIN FILMS, *JOSEPHSON JUNCTIONS, *PATENTS, BANDS(STRIPS), ELECTRONICS, MAGNESIUM, DETECTORS, SUPERCONDUCTORS, FILMS, SINGLE CRYSTALS, SUBSTRATES, BENDING, FRACTURE(MECHANICS), OXIDES, ALUMINUM, TRANSDUCERS, BARIUM, SOLID STATE PHYSICS, YTTRIUM

Subject Categories : Solid State Physics
      Physical Chemistry
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE