Speed of the Superconducting-Normal Transition in Tin Films

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WE have carried out some experiments to study the rate at which resistance is restored in a superconducting tin film by the application of a magnetic field above the critical value. No direct experiment of this kind has previously been reported, although Woodford and Feucht1, using a radiofrequency method, inferred that the transition in an evaporated film of an unspecified metal probably occurred in less than 10−9 sec. The question is of some importance both from a fundamental point of view and in determining the lower limit of the switching time of superconducting circuit devices such as the cryotron.

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  1. 1

    Woodford, J. B., and Feucht, D. L., Proc. Inst. Rad. Eng., 46, 1871 (1958).

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OLIVER, D., RAYNER, M. & RHODERICK, E. Speed of the Superconducting-Normal Transition in Tin Films. Nature 187, 492 (1960) doi:10.1038/187492a0

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