A Study of Current Stability in the Dissipative Flux Flow State of Superconducting Films

作者：Grimaldi Gaia^*; Leo Antonio; Nigro Angela; Bruno Elena; Priolo Francesco; Pace Sandro

来源：IEEE Transactions on Applied Superconductivity, 2013, 23(3): 8200704.

DOI：10.1109/TASC.2013.2237877

• Critical current
• current-voltage characteristics
• instability mechanisms
• superconducting films

In several superconducting applications, low energy losses are strictly demanding. In superconducting films, the dissipative flux flow state plays a role in the stability of the superconducting state in those devices that can operate just above the critical current (I-c). Therefore, details of the current-voltage (I-V) characteristics and in particular of current instabilities from the flux flow state to the normal one can become significant. We study current stability in the flux flow dissipative state by a proper current-voltage measurement mode. Low-temperature superconducting films have been investigated to demonstrate that the current stability range above I-c can be increased by light ion irradiation.

• 出版日期2013-6