Stochastic and complex depinning dynamics of magnetic domain walls
Résumé
We study the thermally induced depinning process of a single magnetic domain wall (DW) under applied field when the DW is trapped by a notch made in a nanowire shaped from a spin-valve multilayer with in-plane magnetization. In such devices depinning is typically a stochastic process and the depinning field distribution exhibits complex features. By analyzing simultaneously depinning field distributions and relaxation data, we observe two distinct sources of "complexity" in DW depinning processes: multiplicity in the DW structure and fundamental complexity in the depinning process.
Domaines
Matière Condensée [cond-mat]Origine | Fichiers éditeurs autorisés sur une archive ouverte |
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