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arXiv · 1005.2166

Dynamic binding of driven interfaces in coupled ultrathin ferromagnetic layers

P. J. Metaxas·R. L. Stamps·J. P. Jamet·J. Ferré·V. Baltz·B. Rodmacq·P. Politi
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Abstract

We demonstrate experimentally dynamic interface binding in a system consisting of two coupled ferromagnetic layers. While domain walls in each layer have different velocity-field responses, for two broad ranges of the driving field, H, walls in the two layers are bound and move at a common velocity. The bound states have their own velocity-field response and arise when the isolated wall velocities in each layer are close, a condition which always occurs as H->0. Several features of the bound states are reproduced using a one dimensional model, illustrating their general nature.

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P. J. Metaxas, R. L. Stamps, J. P. Jamet, J. Ferré, V. Baltz, B. Rodmacq, P. Politi. 2010-05-12. Dynamic binding of driven interfaces in coupled ultrathin ferromagnetic layers. https://doi.org/10.1103/physrevlett.104.237206

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