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arXiv · 1409.1007

Current Induced Fingering Instability in Magnetic Domain Walls

Jon Gorchon·Javier Curiale·Andrejs Cebers·Aristide Lemaître·Nicolas Vernier·Mathis Plapp·Vincent Jeudy
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Abstract

The shape instability of magnetic domain walls under current is investigated in a ferromagnetic (Ga,Mn)(As,P) film with perpendicular anisotropy. Domain wall motion is driven by the spin transfer torque mechanism. A current density gradient is found either to stabilize domains with walls perpendicular to current lines or to produce finger-like patterns, depending on the domain wall motion direction. The instability mechanism is shown to result from the non-adiabatic contribution of the spin transfer torque mechanism.

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Jon Gorchon, Javier Curiale, Andrejs Cebers, Aristide Lemaître, Nicolas Vernier, Mathis Plapp, Vincent Jeudy. 2014-09-03. Current Induced Fingering Instability in Magnetic Domain Walls. https://doi.org/10.1103/physrevb.92.060411

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