Electrical Control of Perpendicular Magnetic Anisotropy and Spin-Orbit Torque-Induced Magnetization Switching

被引：11
|
作者：
Huang, Qikun [1 ]
Dong, Yanan [1 ]
Zhao, Xiaonan [1 ]
Wang, Jing [1 ]
Chen, Yanxue [1 ]
Dai, Lihui [1 ]
Dai, Ying [1 ]
Dai, Youyong [1 ]
Yan, Shishen [1 ]
Tian, Yufeng [1 ]
机构：
[1] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China
来源：
ADVANCED ELECTRONIC MATERIALS | 2020年 / 6卷 / 03期
基金：
中国国家自然科学基金;
关键词：
exchange coupling; oxygen ion migration; perpendicular magnetic anisotropy; spin-orbit torque; MULTILAYERS; PD/CO;
D O I：
10.1002/aelm.201900782
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Voltage-driven oxygen ion migration in ferromagnetic metal/oxide heterostructures offers a highly effective means to tailor emergent interfacial functionalities. In heterojunctions with a core structure of Pt/Co/CoO/TiO2 (TaOx), it is demonstrated that exchange coupling of magnetic moments across the Co/CoO interface provides an extra source to stabilize the perpendicular magnetic anisotropy (PMA). Moreover, the strength of this interfacial coupling can be reversibly controlled through voltage-driven oxygen ion migration at the Co/CoO interface, resulting in electrical-field-controllable PMA. In combination with the spin current generated from Pt, it is revealed that the spin-orbit torque (SOT) switching of the perpendicular magnetization of Co can be turned ON/OFF by electrical field. Tunable PMA and SOT switching makes heavy metal/ferromagnetic metal/antiferromagnetic oxide heterojunctions a promising candidate to future voltage-controlled, ultralow-power, and high-density spintronics devices.
引用
收藏
页数：6
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