1. Magnetic Damping Modulation in IrMn3/Ni80Fe20 via the Magnetic Spin Hall Effect
- Author
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Hilal Saglam, John E. Pearson, Zhizhi Zang, Axel Hoffmann, J. Holanda, Vedat Karakas, Valentine Novosad, Ozhan Ozatay, Yuzi Liu, Yi Li, and Ralu Divan
- Subjects
Physics ,Permalloy ,Magnetization dynamics ,Condensed matter physics ,General Physics and Astronomy ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Epitaxy ,01 natural sciences ,Ferromagnetic resonance ,Spin magnetic moment ,Condensed Matter::Materials Science ,Hall effect ,0103 physical sciences ,Magnetic damping ,Condensed Matter::Strongly Correlated Electrons ,010306 general physics ,Spin-½ - Abstract
Noncollinear 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 nonmagnetic materials. Here we investigated how ferromagnetic resonance of permalloy (${\mathrm{Ni}}_{80}{\mathrm{Fe}}_{20}$) is modulated by spin Hall effects in adjacent epitaxial ${\mathrm{IrMn}}_{3}$ films. We observe a large dc modulation of the ferromagnetic resonance linewidth for currents applied along the [001] ${\mathrm{IrMn}}_{3}$ 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 ${\mathrm{IrMn}}_{3}$ provides novel pathways for modulating magnetization dynamics electrically.
- Published
- 2020