Critical current of thin superconducting wire with side branches

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Abstract
When a transport current is injected into a thin superconducting wire with dangling superconducting side branches periodically attached to it, distance L apart, and the side branches are very much longer than the temperature-dependent coherence length, then the critical-current density is, according to the Ginzburg-Landau theory, larger than that of a wire without side branches, approaching the latter for L/ξ→∞ and becoming very much larger than the latter for L/ξ≪1.

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