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Quench cooled
superconducting rings
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Arrays of quenched superconducting rings provide a model system to test ideas about
the early development of the universe. We found that the cooling dynamics of our rings was dominated by thermally
activated processes.
"Thermally Activated Spontaneous Fluxoid Formation in Superconducting Thin-Film Rings", J.R. Kirtley, C.C. Tsuei, and F. Tafuri, Phys. Rev. Lett. 90 , 257001 (2003).
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