Vortex-Antivortex Annihilation and Flux Turbulence in Layered Type-II Superconductors |
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| Authors: | E. E. Dvash I. Shapiro B. Rosenstein N. Logoboy B. Y. Shapiro |
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| Affiliation: | 1. Department of Physics, Institute of Superconductivity, Bar-Ilan University, Ramat-Gan, 52900, Israel
2. Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan, ROC
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| Abstract: | 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. |
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