One fundamental obstacle to efficient ferromagnetic spintronics is magnetic precession, which intrinsically limits the dynamics of magnetic textures, We demonstrate that the domain wall precession fully vanishes with a record mobility when the net angular momentum is compensated (TAC) in DWs driven by spin-orbit torque in a ferrimagnetic GdFeCo/Pt track. We use transverse in-plane fields to reveal the internal structure of DWs and provide a robust and parameter-free measurement of TAC. Our results highlight the mechanism of faster and more efficient dynamics in materials with multiple spin lattices and reduced net angular momentum, promising for high-speed, low-power spintronics applications.
@article{arxiv.1908.08867,
title = {Precession-free domain wall dynamics in compensated ferrimagnets},
author = {E. Haltz and J. Sampaio and S. Krishnia and L. Berges and R. Weil and A. Mougin},
journal= {arXiv preprint arXiv:1908.08867},
year = {2020}
}