Controlling hysteresis in superconducting constrictions with a resistive shunt
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چکیده
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. PACS numbers: 74.78.-w, 73.63.-b, 74.45.+c, 85.25.Dq Submitted to: Supercond. Sci. Technol. Controlling hysteresis in superconducting constrictions with a resistive shunt 2
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تاریخ انتشار 2017