4 years ago

Emergent electromagnetism induced by topological defects created during magnetization reversal in nanowires.

J. F. Loeffler, H.-B. Braun, M. Charilaou

We report that the irreversible magnetization switching process in ferromagnetic nanoparticles is governed by the formation and dynamics of topological point-defects in the form of hedgehog-antihedgehog pairs. After nucleation, these pairs rapidly separate with speeds exceeding domain wall velocities, and they generate an emergent electric field of solenoidal character and substantial magnitude.

Publisher URL: http://arxiv.org/abs/1711.03511

DOI: arXiv:1711.03511v1

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