Controlling hysteresis in superconducting constrictions with a resistive shunt
arXiv:1503.05664 · doi:10.1088/0953-2048/28/7/072003
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.
6 pages, 7 figures, including Supplementary Information