Magnetic Damping Modulation in IrMn3/Ni80Fe20 via the Magnetic Spin Hall Effect

José Holanda; Hilal Saglam; Vedat Karakas; Zhizhi Zang; Yi Li; Ralu Divan; Yuzi Liu; Ozhan Ozatay; Valentine Novosad; John E. Pearson; Axel Hoffmann

doi:10.1103/PhysRevLett.124.087204

Magnetic Damping Modulation in IrMn3/Ni80Fe20 via the Magnetic Spin Hall Effect

José Holanda, Hilal Saglam, Vedat Karakas, Zhizhi Zang, Yi Li, Ralu Divan, Yuzi Liu, Ozhan Ozatay, Valentine Novosad, John E. Pearson, Axel Hoffmann

Research output: Contribution to journal › Article › peer-review

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 (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.

Original language	English (US)
Article number	087204
Journal	Physical review letters
Volume	124
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.124.087204
State	Published - Feb 27 2020

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.124.087204

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Magnetic Damping Modulation in IrMn3/Ni80Fe20 via the Magnetic Spin Hall Effect. / Holanda, José; Saglam, Hilal; Karakas, Vedat; Zang, Zhizhi; Li, Yi; Divan, Ralu; Liu, Yuzi; Ozatay, Ozhan; Novosad, Valentine; Pearson, John E.; Hoffmann, Axel.

In: Physical review letters, Vol. 124, No. 8, 087204, 27.02.2020.

Research output: Contribution to journal › Article › peer-review

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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 (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.",

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AU - Holanda, José

AU - Saglam, Hilal

AU - Karakas, Vedat

AU - Zang, Zhizhi

AU - Li, Yi

AU - Divan, Ralu

AU - Liu, Yuzi

AU - Ozatay, Ozhan

AU - Novosad, Valentine

AU - Pearson, John E.

AU - Hoffmann, Axel

PY - 2020/2/27

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AB - 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 (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.

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