Measurement of the tilt of a moving domain wall shows precession-free dynamics in compensated ferrimagnets - Archive ouverte HAL
Article Dans Une Revue Scientific Reports Année : 2020

Measurement of the tilt of a moving domain wall shows precession-free dynamics in compensated ferrimagnets

Eloi Haltz
João Sampaio
Sachin Krishnia
Léo Berges
Raphaël Weil

Résumé

One fundamental obstacle to efficient ferromagnetic spintronics is magnetic precession, which intrinsically limits the dynamics of magnetic textures. We experimentally demonstrate that this precession vanishes when the net angular momentum is compensated in domain walls driven by spin–orbit torque in a ferrimagnetic GdFeCo/Pt track. We use transverse in-plane fields to provide a robust and parameter-free measurement of the domain wall internal magnetisation angle, demonstrating that, at the angular compensation, the DW tilt is zero, and thus the magnetic precession that caused it is suppressed. Our results highlight the mechanism of faster and more efficient dynamics in materials with multiple spin lattices and vanishing net angular momentum, promising for high-speed, low-power spintronic applications.
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hal-03007357 , version 1 (21-11-2024)

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Eloi Haltz, João Sampaio, Sachin Krishnia, Léo Berges, Raphaël Weil, et al.. Measurement of the tilt of a moving domain wall shows precession-free dynamics in compensated ferrimagnets. Scientific Reports, 2020, 10 (16292), ⟨10.1038/s41598-020-73049-5⟩. ⟨hal-03007357⟩
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