Non-collinear antiferromagnets can have additional spin Hall effects due to the net chirality of their magnetic spin structure, which provides for more complex spin-transport phenomena compared to ordinary non-magnetic materials. Here we investigated how ferromagnetic resonance of permalloy (Ni80Fe20) is modulated by spin Hall effects in adjacent epitaxial IrMn3 films. We observe a large dc modulation of the ferromagnetic resonance linewidth for currents applied along the [001] IrMn3 direction. This very strong angular dependence of spin-orbit torques from dc currents through the bilayers can be explained by the magnetic spin Hall effect where IrMn3 provides novel pathways for modulating magnetization dynamics electrically.
@article{arxiv.1911.00943,
title = {Magnetic damping modulation in $IrMn_{3}/Ni_{80}Fe_{20}$ via the magnetic spin Hall effect},
author = {Jose Holanda and Hilal Saglam and Vedat Karakas and Zhizhi Zang and Yi Li and Ralu Divan and Yuzi Liu and Ozhan Ozatay and Valentine Novosad and John E. Pearson and Axel Hoffmann},
journal= {arXiv preprint arXiv:1911.00943},
year = {2020}
}