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Equipartition of Current in Parallel Conductors on Cooling Through the Superconducting Transition

S. Sarangi·S. P. Chockalingam·Raghav G Mavinkurve·S. V. Bhat·N. Kumar
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Abstract

Our experiments show that for two or more pieces of a wire, of different lengths in general, combined in parallel and connected to a dc source, the current ratio evolves towards unity as the combination is cooled to the superconducting transition temperature Tc, and remains pinned at that value below it. This re-distribution of the total current towards equipartition without external fine tuning is a surprise. It can be physically understood in terms of a mechanism that involves the flux-flow resistance associated with the transport current in a wire of type-II superconducting material. It is the fact that the flux-flow resistance increases with current that drives the current division towards equipartition.

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S. Sarangi, S. P. Chockalingam, Raghav G Mavinkurve, S. V. Bhat, N. Kumar. 2006-03-15. Equipartition of Current in Parallel Conductors on Cooling Through the Superconducting Transition. https://doi.org/10.1088/0953-8984%2F18%2F1%2F011

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