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Title: Active superconducting devices formed of thin films

Abstract

Active superconducting devices are formed of thin films of superconductor which include a main conduction channel which has an active weak link region. The weak link region is composed of an array of links of thin film superconductor spaced from one another by voids and selected in size and thickness such that magnetic flux can propagate across the weak link region when it is superconducting. Magnetic flux applied to the weak link region will propagate across the array of links causing localized loss of superconductivity in the links and changing the effective resistance across the links. The magnetic flux can be applied from a control line formed of a superconducting film deposited coplanar with the main conduction channel and weak link region on a substrate. The devices can be formed of any type to superconductor but are particularly well suited to the high temperature superconductors since the devices can be entirely formed from coplanar films with no overlying regions. The devices can be utilized for a variety of electrical components, including switching circuits, amplifiers, oscillators and modulators, and are well suited to microwave frequency applications.

Inventors:
 [1];  [1];  [1];  [1]
  1. Madison, WI
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
867840
Patent Number(s):
5019721
Application Number:
07/395,965
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI)
Patent Classifications (CPCs):
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
active; superconducting; devices; formed; films; superconductor; main; conduction; channel; weak; link; region; composed; array; links; film; spaced; voids; selected; size; thickness; magnetic; flux; propagate; applied; causing; localized; loss; superconductivity; changing; effective; resistance; control; line; deposited; coplanar; substrate; type; particularly; suited; temperature; superconductors; entirely; overlying; regions; utilized; variety; electrical; components; including; switching; circuits; amplifiers; oscillators; modulators; microwave; frequency; applications; temperature superconductors; microwave frequency; control line; superconducting film; electrical components; temperature superconductor; magnetic flux; switching circuit; link region; weak link; superconducting device; active superconducting; devices formed; film deposited; line formed; frequency applications; conducting film; main conduction; conduction channel; wave frequency; superconducting devices; film superconductor; electrical component; /327/257/505/

Citation Formats

Martens, Jon S, Beyer, James B, Nordman, James E, and Hohenwarter, Gert K. G. Active superconducting devices formed of thin films. United States: N. p., 1991. Web.
Martens, Jon S, Beyer, James B, Nordman, James E, & Hohenwarter, Gert K. G. Active superconducting devices formed of thin films. United States.
Martens, Jon S, Beyer, James B, Nordman, James E, and Hohenwarter, Gert K. G. Tue . "Active superconducting devices formed of thin films". United States. https://www.osti.gov/servlets/purl/867840.
@article{osti_867840,
title = {Active superconducting devices formed of thin films},
author = {Martens, Jon S and Beyer, James B and Nordman, James E and Hohenwarter, Gert K. G.},
abstractNote = {Active superconducting devices are formed of thin films of superconductor which include a main conduction channel which has an active weak link region. The weak link region is composed of an array of links of thin film superconductor spaced from one another by voids and selected in size and thickness such that magnetic flux can propagate across the weak link region when it is superconducting. Magnetic flux applied to the weak link region will propagate across the array of links causing localized loss of superconductivity in the links and changing the effective resistance across the links. The magnetic flux can be applied from a control line formed of a superconducting film deposited coplanar with the main conduction channel and weak link region on a substrate. The devices can be formed of any type to superconductor but are particularly well suited to the high temperature superconductors since the devices can be entirely formed from coplanar films with no overlying regions. The devices can be utilized for a variety of electrical components, including switching circuits, amplifiers, oscillators and modulators, and are well suited to microwave frequency applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {5}
}