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29 March 2024
 
  » arxiv » cond-mat/0508459

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Vortex-antivortex dynamics and field-polarity-dependent flux creep in hybrid superconductor/ferromagnet nanostructures
M. Lange ; M.J. Van Bael ; A.V. Silhanek ; V.V. Moshchalkov ;
Date 19 Aug 2005
Subject Superconductivity | cond-mat.supr-con
AbstractVortex-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.
Source arXiv, cond-mat/0508459
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