Enhancement of critical current by microwave irradiation in wide superconducting films

Details Enhancement of critical current by microwave irradiation in wide superconducting films Enhancement of critical current by microwave irradiation in wide superconducting films

2006-06-30

arxiv.org/abs/cond-mat/0607007v1

Physics

Condensed Matter

Superconductivity

7 pages, 3 figures, to be published in Supercond. Sci. Technol

Scientific paper

10.1088/0953-2048/19/8/034

The temperature dependences of the enhanced critical current in wide and thin Sn films exposed to the microwave field have been investigated experimentally and analyzed. It was found that the microwave field stabilizes the current state of a wide film with respect to the entry of Abrikosov vortices. The stabilizing effect of irradiation increases with frequency. Using similarity between the effects of microwave enhancement of superconductivity observed for homogeneous (narrow films) and inhomogeneous (wide films) distributions of the superconducting current over the film width, we have succeeded in partial extension of the Eliashberg theory to the case of wide films.

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