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

Author

Grimaldi, G. ; Leo, A. ; Nigro, A. ; Bruno, E. ; Priolo, Francesco ; Pace, Shannon

Author_Institution

SPIN Salerno, Fisciano, Italy

Volume

23

Issue

3

fYear

2013

fDate

Jun-13

Firstpage

8200704

Lastpage

8200704

Abstract

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.

Keywords

critical currents; flux flow; ion beam effects; superconducting thin films; critical current; current stability; current-voltage characteristics; dissipative flux flow state; light ion irradiation; superconducting film; Lattices; Magnetic fields; Niobium; Radiation effects; Superconducting films; Temperature measurement; Thermal stability; Critical current; current-voltage characteristics; instability mechanisms; superconducting films;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2237877

Filename

6403522