Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling

Qinli Ma; Yufan Li; Young-suk Choi; Wei-Chuan Chen; Shu Jen Han; C. L. Chien

doi:10.1063/5.0024724

Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling

Qinli Ma, Yufan Li, Young-suk Choi, Wei-Chuan Chen, Shu Jen Han, C. L. Chien

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

17 Scopus citations

Abstract

Spin orbit torque (SOT) has attracted much attention as an energy efficient electrical method to switch the magnetization in single magnetic layer with both in-plane and perpendicular anisotropy. Here, we report SOT switching of synthetic antiferromagnetic and ferrimagnetic Co/Ir/Co trilayers, where the net magnetization and the interlayer coupling strength are highly controllable. A weak external field dependence of the SOT switching was observed due to the robust domain wall structure in the trilayer. The switching current density was observed to scale inversely with the net magnetization. For trilayers with the same net magnetization, switching current is independent of the layer order because switching in the thicker Co layer dominates. In both ferromagnetic and antiferromagetic regimes, the switching current reflects the interlayer coupling strength.

Original language	English (US)
Pages (from-to)	172403
Journal	Applied Physics Letters
Volume	117
Issue number	17
DOIs	https://doi.org/10.1063/5.0024724
State	Published - Oct 27 2020
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-11-02
Acknowledged KAUST grant number(s): OSR2017-CRG6-3427.01
Acknowledgements: For their work at JHU, the authors acknowledge the support from the U.S. Department of Energy (DOE), Basic Energy Science Award No. DE-SC0009390, and KAUST (Grant No. OSR2017-CRG6-3427.01). Q.M. acknowledges discussion with Weiwei Lin.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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@article{41ad87e837fe4112a3e665d292c1b228,

title = "Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling",

abstract = "Spin orbit torque (SOT) has attracted much attention as an energy efficient electrical method to switch the magnetization in single magnetic layer with both in-plane and perpendicular anisotropy. Here, we report SOT switching of synthetic antiferromagnetic and ferrimagnetic Co/Ir/Co trilayers, where the net magnetization and the interlayer coupling strength are highly controllable. A weak external field dependence of the SOT switching was observed due to the robust domain wall structure in the trilayer. The switching current density was observed to scale inversely with the net magnetization. For trilayers with the same net magnetization, switching current is independent of the layer order because switching in the thicker Co layer dominates. In both ferromagnetic and antiferromagetic regimes, the switching current reflects the interlayer coupling strength.",

author = "Qinli Ma and Yufan Li and Young-suk Choi and Wei-Chuan Chen and Han, {Shu Jen} and Chien, {C. L.}",

note = "KAUST Repository Item: Exported on 2020-11-02 Acknowledged KAUST grant number(s): OSR2017-CRG6-3427.01 Acknowledgements: For their work at JHU, the authors acknowledge the support from the U.S. Department of Energy (DOE), Basic Energy Science Award No. DE-SC0009390, and KAUST (Grant No. OSR2017-CRG6-3427.01). Q.M. acknowledges discussion with Weiwei Lin. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2020",

month = oct,

day = "27",

doi = "10.1063/5.0024724",

language = "English (US)",

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TY - JOUR

T1 - Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling

AU - Ma, Qinli

AU - Li, Yufan

AU - Choi, Young-suk

AU - Chen, Wei-Chuan

AU - Han, Shu Jen

AU - Chien, C. L.

N1 - KAUST Repository Item: Exported on 2020-11-02 Acknowledged KAUST grant number(s): OSR2017-CRG6-3427.01 Acknowledgements: For their work at JHU, the authors acknowledge the support from the U.S. Department of Energy (DOE), Basic Energy Science Award No. DE-SC0009390, and KAUST (Grant No. OSR2017-CRG6-3427.01). Q.M. acknowledges discussion with Weiwei Lin. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2020/10/27

Y1 - 2020/10/27

N2 - Spin orbit torque (SOT) has attracted much attention as an energy efficient electrical method to switch the magnetization in single magnetic layer with both in-plane and perpendicular anisotropy. Here, we report SOT switching of synthetic antiferromagnetic and ferrimagnetic Co/Ir/Co trilayers, where the net magnetization and the interlayer coupling strength are highly controllable. A weak external field dependence of the SOT switching was observed due to the robust domain wall structure in the trilayer. The switching current density was observed to scale inversely with the net magnetization. For trilayers with the same net magnetization, switching current is independent of the layer order because switching in the thicker Co layer dominates. In both ferromagnetic and antiferromagetic regimes, the switching current reflects the interlayer coupling strength.

AB - Spin orbit torque (SOT) has attracted much attention as an energy efficient electrical method to switch the magnetization in single magnetic layer with both in-plane and perpendicular anisotropy. Here, we report SOT switching of synthetic antiferromagnetic and ferrimagnetic Co/Ir/Co trilayers, where the net magnetization and the interlayer coupling strength are highly controllable. A weak external field dependence of the SOT switching was observed due to the robust domain wall structure in the trilayer. The switching current density was observed to scale inversely with the net magnetization. For trilayers with the same net magnetization, switching current is independent of the layer order because switching in the thicker Co layer dominates. In both ferromagnetic and antiferromagetic regimes, the switching current reflects the interlayer coupling strength.

UR - http://hdl.handle.net/10754/665734

UR - http://aip.scitation.org/doi/10.1063/5.0024724

U2 - 10.1063/5.0024724

DO - 10.1063/5.0024724

M3 - Article

SN - 0003-6951

VL - 117

SP - 172403

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

ER -

Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling

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