Current induced magnetization switching in Pt/Co/Cr structures with enhanced perpendicular magnetic anisotropy and spin Hall effect

Baoshan Cui; Jijun Yun; Kunya Yang; Hao Wu; Zhendong Zhu; Yalu Zuo; Dezheng Yang; Meizhen Gao; Zongzhi Zhang; Li Xi; Kang L. Wang

doi:10.7567/1882-0786/ab0a42

Current induced magnetization switching in Pt/Co/Cr structures with enhanced perpendicular magnetic anisotropy and spin Hall effect

Baoshan Cui, Jijun Yun, Kunya Yang, Hao Wu, Zhendong Zhu, Yalu Zuo, Dezheng Yang, Meizhen Gao, Zongzhi Zhang, Li Xi, Kang L. Wang

College of Electrical Engineering and Computer Science

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

5 Citations (Scopus)

Abstract

We study the perpendicular magnetic anisotropy (PMA) and spin-orbit torques (SOTs) in Pt/Co/Cr stacks as a function of Cr thickness. An enhanced PMA is observed and ascribed to the strong interfacial anisotropy between Co and Cr. Moreover, SOTs induced magnetization switching is achieved under relatively small critical current density in the order of 10⁶ A cm^-2 due to the enhanced effective spin Hall angle up to 0.15-0.27. Significantly, the linear dependence between and the square of longitudinal resistivity suggests that the spin Hall effect may arise from the intrinsic mechanism in our systems.

Original language	English
Article number	043001
Journal	Applied Physics Express
Volume	12
Issue number	4
DOIs	https://doi.org/10.7567/1882-0786/ab0a42
Publication status	Published - 2019 Apr 1

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

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title = "Current induced magnetization switching in Pt/Co/Cr structures with enhanced perpendicular magnetic anisotropy and spin Hall effect",

abstract = "We study the perpendicular magnetic anisotropy (PMA) and spin-orbit torques (SOTs) in Pt/Co/Cr stacks as a function of Cr thickness. An enhanced PMA is observed and ascribed to the strong interfacial anisotropy between Co and Cr. Moreover, SOTs induced magnetization switching is achieved under relatively small critical current density in the order of 106 A cm-2 due to the enhanced effective spin Hall angle up to 0.15-0.27. Significantly, the linear dependence between and the square of longitudinal resistivity suggests that the spin Hall effect may arise from the intrinsic mechanism in our systems.",

author = "Baoshan Cui and Jijun Yun and Kunya Yang and Hao Wu and Zhendong Zhu and Yalu Zuo and Dezheng Yang and Meizhen Gao and Zongzhi Zhang and Li Xi and Wang, {Kang L.}",

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TY - JOUR

T1 - Current induced magnetization switching in Pt/Co/Cr structures with enhanced perpendicular magnetic anisotropy and spin Hall effect

AU - Cui, Baoshan

AU - Yun, Jijun

AU - Yang, Kunya

AU - Wu, Hao

AU - Zhu, Zhendong

AU - Zuo, Yalu

AU - Yang, Dezheng

AU - Gao, Meizhen

AU - Zhang, Zongzhi

AU - Xi, Li

AU - Wang, Kang L.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - We study the perpendicular magnetic anisotropy (PMA) and spin-orbit torques (SOTs) in Pt/Co/Cr stacks as a function of Cr thickness. An enhanced PMA is observed and ascribed to the strong interfacial anisotropy between Co and Cr. Moreover, SOTs induced magnetization switching is achieved under relatively small critical current density in the order of 106 A cm-2 due to the enhanced effective spin Hall angle up to 0.15-0.27. Significantly, the linear dependence between and the square of longitudinal resistivity suggests that the spin Hall effect may arise from the intrinsic mechanism in our systems.

AB - We study the perpendicular magnetic anisotropy (PMA) and spin-orbit torques (SOTs) in Pt/Co/Cr stacks as a function of Cr thickness. An enhanced PMA is observed and ascribed to the strong interfacial anisotropy between Co and Cr. Moreover, SOTs induced magnetization switching is achieved under relatively small critical current density in the order of 106 A cm-2 due to the enhanced effective spin Hall angle up to 0.15-0.27. Significantly, the linear dependence between and the square of longitudinal resistivity suggests that the spin Hall effect may arise from the intrinsic mechanism in our systems.

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DO - 10.7567/1882-0786/ab0a42

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VL - 12

JO - Applied Physics Express

JF - Applied Physics Express

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M1 - 043001

ER -

Current induced magnetization switching in Pt/Co/Cr structures with enhanced perpendicular magnetic anisotropy and spin Hall effect

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