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arXiv · 1107.1122

Hysteretic magnetic pinning and reversible resistance switching in High-Tc superconductor/ferromagnet multilayers

C. Visani·P. J. Metaxas·A. Collaudin·B. Calvet·R. Bernard·J. Briatico·C. Deranlot·K. Bouzehouane·J. E. Villegas
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Abstract

We study a high-TC superconducting (YBa2Cu3O7-d) / ferromagnetic (Co/Pt multilayer) hybrid which exhibits resistance switching driven by the magnetic history: depending on the direction of the external field, a pronounced decrease or increase of the mixed-state resistance is observed as magnetization reversal occurs within the Co/Pt multilayer. We demonstrate that stray magnetic fields cause these effects via i) creation of vortices/antivortices and ii) magnetostatic pinning of vortices that are induced by the external field.

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C. Visani, P. J. Metaxas, A. Collaudin, B. Calvet, R. Bernard, J. Briatico, C. Deranlot, K. Bouzehouane, J. E. Villegas. 2011-07-06. Hysteretic magnetic pinning and reversible resistance switching in High-Tc superconductor/ferromagnet multilayers. https://doi.org/10.1103/physrevb.84.054539

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