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arXiv · 1503.05664

Controlling hysteresis in superconducting constrictions with a resistive shunt

Nikhil Kumar·C. B. Winkelmann·Sourav Biswas·H. Courtois·Anjan K. Gupta
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Abstract

We demonstrate control of the thermal hysteresis in superconducting constrictions by adding a resistive shunt. In order to prevent thermal relaxation oscillations, the shunt resistor is placed in close vicinity of the constriction, making the inductive current-switching time smaller than the thermal equilibration time. We investigate the current-voltage characteristics of the same constriction with and without the shunt-resistor. The widening of the hysteresis-free temperature range is explained on the basis of a simple model.

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Nikhil Kumar, C. B. Winkelmann, Sourav Biswas, H. Courtois, Anjan K. Gupta. 2015-06-04. Controlling hysteresis in superconducting constrictions with a resistive shunt. https://doi.org/10.1088/0953-2048%2F28%2F7%2F072003

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