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

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 magnetizatio...

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Bibliographic Details
Published in:arXiv.org 2011-07
Main Authors: Visani, C, Metaxas, P J, Collaudin, A, Calvet, B, Bernard, R, Briatico, J, Deranlot, C, Bouzehouane, K, Villegas, J E
Format: Article
Language:English
Subjects:
Cobalt
Ferromagnetism
Magnetization reversal
Multilayers
Pinning
Platinum
Switching
Vortices
YBCO superconductors
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1107.1122