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. Here, 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.
- Authors:
-
[1];
[2];
[2]
- HFC semiconductor Corp., Albany, NY (United States)
- Johns Hopkins Univ., Baltimore, MD (United States)
- Publication Date:
- Research Org.:
- Johns Hopkins Univ., Baltimore, MD (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); KAUST
- OSTI Identifier:
- 1690155
- Alternate Identifier(s):
- OSTI ID: 1690290
- Grant/Contract Number:
- SC0009390; OSR2017-CRG6-3427.01
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 117; Journal Issue: 17; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 42 ENGINEERING; spin orbit torque switching; mutilayer; perpendicular magnetic anisotropy; synthetic antiferromagnet; spintronics
Citation Formats
Ma, Qinli, Li, Yufan, Choi, Young-suk, Chen, Wei-Chuan, Han, Shu Jen, and Chien, C. L. Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling. United States: N. p., 2020.
Web. doi:10.1063/5.0024724.
Ma, Qinli, Li, Yufan, Choi, Young-suk, Chen, Wei-Chuan, Han, Shu Jen, & Chien, C. L. Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling. United States. https://doi.org/10.1063/5.0024724
Ma, Qinli, Li, Yufan, Choi, Young-suk, Chen, Wei-Chuan, Han, Shu Jen, and Chien, C. L. Tue .
"Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling". United States. https://doi.org/10.1063/5.0024724. https://www.osti.gov/servlets/purl/1690155.
@article{osti_1690155,
title = {Spin orbit torque switching of synthetic Co/Ir/Co trilayers with perpendicular anisotropy and tunable interlayer coupling},
author = {Ma, Qinli and Li, Yufan and Choi, Young-suk and Chen, Wei-Chuan and Han, Shu Jen and Chien, C. L.},
abstractNote = {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. Here, 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.},
doi = {10.1063/5.0024724},
journal = {Applied Physics Letters},
number = 17,
volume = 117,
place = {United States},
year = {Tue Oct 27 00:00:00 EDT 2020},
month = {Tue Oct 27 00:00:00 EDT 2020}
}
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