THERMALLY GENERATED MAGNETIC FLUX IN SUPERCONDUCTING LOOPS

Abstract
We have measured the changes in magnetic flux coupled into a SQUID from a superconducting loop which occur when part of the loop is heated. These changes, related to penetration-depth changes, are found to be very strongly influenced by the surface condition of the tin wire. This result could have complications in experiments concerning the thermoelectric flux generated in a bimetallic superconducting loop

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