Kirtley Scientific - John R. Kirtley

Quench cooled
superconducting rings

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).