Browsing by Author "Logoboy, N."

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Vortex-Antivortex Annihilation and Flux Turbulence in Layered Type-II Superconductors
(2012-04-01)
Dvash, E. E.
;
Shapiro, I.
;
Rosenstein, B.
;
Logoboy, N.
;
Shapiro, B. Y.
New mechanism of turbulence instability of standing flux-antiflux front in layered superconductors is presented. We describe two assisting mechanisms destabilizing the standing vortex-antivortex front. There are anisotropy of the layered superconductors and the heat, released by the vortex-antivortex annihilation. We present the conditions of the front stability for various anisotropy and heating parameters. We predict that heat released by the vortex-antivortex annihilations enhances the turbulence instability in superconductors with small anisotropy. The characteristic size of the unstable pattern is estimated. The results are in a good agreement with recent experiments.