Maintaining the local temperature below the critical value in thermally out of equilibrium superconducting wires

Details Maintaining the local temperature below the critical value in thermally out of equilibrium superconducting wires Maintaining the local temperature below the critical value in thermally out of equilibrium superconducting wires

2009-07-15

arxiv.org/abs/0907.2498v1

Phys. Rev. B 80, 214510 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4+ pages, 3 figrues; also http://www.newscientist.com/article/mg20427365.400-superconductors-can-come-i\n-from-the-cold.html

Scientific paper

A generalized theory of open quantum systems combined with mean-field theory is used to study a superconducting wire in contact with thermal baths at different temperatures. It is shown that, depending on the temperature of the colder bath, the temperature of the hotter bath can greatly exceed the equilibrium critical temperature, and still the local temperature in the wire is maintained below the critical temperature and hence the wire remains in the superconducting state. The effects of contact areas and disorder are studied. Finally, an experimental setup is suggested to test our predictions.

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