Current-induced spin-orbit effective field modulations in synthetic antiferromagnetic structures

被引：9
|
作者：
Krishnia, S. [1 ]
Murapaka, C. [1 ]
Sethi, P. [1 ]
Gan, W. L. [1 ]
Wong, Q. Y. [1 ]
Lim, G. J. [1 ]
Lew, W. S. [1 ]
机构：
[1] Nanyang Technol Univ, Sch Phys & Math Sci, 21 Nanyang Link, Singapore 637371, Singapore
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 475卷
基金：
新加坡国家研究基金会;
关键词：
TORQUE; MAGNETIZATION; DRIVEN; LAYER;
D O I：
10.1016/j.jmmm.2018.11.074
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We demonstrate the modulation of spin-orbit torque (SOT) fields in synthetic antiferromagnetic (SAF) structures sandwiched between two heavy metals of opposite spin Hall angles. The SOTs fields that are measured by using harmonic Hall voltage technique, increase with net areal magnetization of the Pt/SAF/Ta structures. The result suggests an antiparallel orientation of the SOT fields in the two ferromagnetic layers. The antiparallel alignment of the SOT fields switches the magnetization of SAF structures with a current density as low as 2.3 x 10(11) A/m(2).
引用
收藏
页码：327 / 333
页数：7
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