Emergence of dissipative structures in current-carrying superconducting wires.
Phys Rev E Stat Nonlin Soft Matter Phys
; 79(5 Pt 2): 056224, 2009 May.
Article
in En
| MEDLINE
| ID: mdl-19518553
ABSTRACT
We discuss the emergence of a spontaneous temperature and critical current spatial modulation in current-carrying high-temperature superconducting wire. The modulation of the critical current along the wire on a scale of 3-10 mm forces a fraction of the transport current to crisscross the resistive interface between the superconducting film and normal metal stabilizer attached to it. This generates additional heat that allows such a structure to be self-sustainable. Stability and the conditions for experimental observation of this phenomenon are also discussed.