Helical instability of a magnetic flux line in a current-carrying superconducting film
Yuri A. Genenko
DOI 10.1103/PhysRevB.53.11757 · Physical Review B
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Abstract
An exact solution for helical magnetic vortex structure in a type-II superconductor strip subjected to a magnetic field parallel to a transport current is obtained. A field-dependent characteristic current of flux-line instability with respect to helical distortions is found to be comparable to experimental values of the critical current of dissipation onset in thin films. A resistive picture following from the above results includes a regime of magnetic moment and voltage oscillations that may be controlled by the current, field, and sample dimensions. © 1996 The American Physical Society.
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