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ROLE OF WEAK LINKS IN THE CRITICAL PROPERTIES OF CERAMIC SUPERCONDUCTORS.

Author(s) : DONALDSON G. B.

Type of article: Article

Summary

FROM THE BEHAVIOUR OF A SMALL SPECIMEN OF LOW DENSITY YBACUO AS A BULK RF SQUID AT 77 K, THE AUTHOR INFERS THAT IT REPRESENTS A NETWORK OF SUPERCONDUCTING LOOPS OF DIAMETER 2-20 MICROMETRES INTERRUPTED BY JOSEPHSON JUNCTIONS OF CRITICAL CURRENT 1-10 MICROAMPERES. FOR FIELDS EXCEEDING ABOUT 0.01 MILLITESLA, FLUX ENTERS THE ENTIRE SPECIMEN AND LEADS TO ENHANCED SQUID RESPONSE. THIS BEHAVIOUR IS CONSISTENT WITH CLEM'S INTERGRANULAR JUNCTION MODEL. IN HIGH DENSITY SPECIMENS DIRECT SQUID RESPONSE IS NOT OBSERVABLE.

Details

  • Original title: ROLE OF WEAK LINKS IN THE CRITICAL PROPERTIES OF CERAMIC SUPERCONDUCTORS.
  • Record ID : 1989-1711
  • Languages: English
  • Source: Cryogenics - vol. 28 - n. 10
  • Publication date: 1988

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