Flux Fluctuations and Critical Currents in a Superconducting Ring Near
- 10 June 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 20 (24) , 1363-1365
- https://doi.org/10.1103/physrevlett.20.1363
Abstract
Measurements of current fluctuations and critical currents as a function of temperature have been made in a ring of superconducting tin with a current resolution corresponding to about 0.1 quanta of magnetic flux in the cylinder and a temperature resolution of a few microdegrees. The fluctuations occur between neighboring quantum states at a rate which increases rapidly with increasing temperature. The critical currents do not follow the temperature dependence predicted by theory.Keywords
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