Spin-orbit precession effect in a Py/Pt/Co tri-layer structure detected by ferromagnetic resonance

Spin-orbit precession effect in a Py/Pt/Co tri-layer structure detected by ferromagnetic resonance

Spin-orbit torques (SOTs) acting in a Py/Pt/Co tri-layer, where the Py and Co layers are in-plane and perpendicularly magnetized, respectively, are investigated via the ferromagnetic resonance method. The resonance linewidth of the Py layer is clearly modulated by the DC bias current due to the damp...

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Veröffentlicht in:Applied physics express 2020-08, Vol.13 (8), p.83001
Hauptverfasser: Hibino, Yuki, Moriyama, Takahiro, Hasegawa, Kento, Koyama, Tomohiro, Ono, Teruo, Chiba, Daichi
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ferromagnetic resonance
spin current
spin-orbit torque
spintronics
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container_issue 8
container_start_page 83001
container_title Applied physics express
container_volume 13
creator Hibino, Yuki
Moriyama, Takahiro
Hasegawa, Kento
Koyama, Tomohiro
Ono, Teruo
Chiba, Daichi
description Spin-orbit torques (SOTs) acting in a Py/Pt/Co tri-layer, where the Py and Co layers are in-plane and perpendicularly magnetized, respectively, are investigated via the ferromagnetic resonance method. The resonance linewidth of the Py layer is clearly modulated by the DC bias current due to the damping-like SOT originated from the spin Hall effect in the Pt. In addition to this, the linewidth modulation efficiency is found to depend on the magnetization polarity of the perpendicularly magnetized Co layer. We conclude that this behavior comes from an additional damping-like SOT originating from the spin-orbit precession effect at the Pt/Co interface.
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subjects ferromagnetic resonance
spin current
spin-orbit torque
spintronics
title Spin-orbit precession effect in a Py/Pt/Co tri-layer structure detected by ferromagnetic resonance
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