Vortex-antivortex dynamics and field-polarity-dependent flux creep in hybrid superconductor-ferromagnet nanostructuresReport as inadecuate



 Vortex-antivortex dynamics and field-polarity-dependent flux creep in hybrid superconductor-ferromagnet nanostructures


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Vortex-antivortex arrays that are created in a type-II superconducting film by lattices of ferromagnetic dots with perpendicular anisotropy have been investigated. The highest critical current is shifted to a nonzero value of the applied field, and current-voltage characteristics show different regimes of vortex motion even in zero-applied field due to the presence of the vortex-antivortex arrays. Creep of interstitial vortices is observed at low driving forces. This flux creep is strongly field-polarity dependent.



Author: M. Lange; M. J. Van Bael; A. V. Silhanek; V. V. Moshchalkov

Source: https://archive.org/







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