Modulated spin orbit torque in ultrathin ferromagnetic layer with different capping layers

被引：4

作者：

Bekele, Zelalem Abebe ^{[1
]}

Meng, Kangkang ^{[1
]}

Miao, Jun ^{[1
]}

Xu, Xiaoguang ^{[1
]}

Jiang, Yong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2019年 / 359卷

基金：

美国国家科学基金会;

关键词：

Spin orbit torque; Interface effect; Perpendicular anisotropy; STRESS EVOLUTION; ANISOTROPY; FILMS;

D O I：

10.1016/j.surfcoat.2018.12.076

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In heavy metal (HM)/ferromagnetic metal (FM)/oxide heterostructures with perpendicular magnetic anisotropy (PMA), the magnetization can be efficiently controlled through spin orbit torque (SOT), which has attracted great attention since its applications in spintronic devices. In this work, we have investigated the SOT with modifying capping layers X in Pt/Co/X trilayers. In these systems, both the bottom Pt/Co and top Co/X interfaces are utilized to generate SOT via bulk SHE effect and/or Rashba effect. By the selecting of different capping layer X, one can expect an enhancement or cancellation of SOT contributions via interface effect, which provides an interesting prospect for enhancing the efficiency of SOT through a proper combination of materials in the structural engineering. Our experimental study explored the choice of the capping materials which influenced the magnetic behavior and current-induced magnetization switching process.

引用

页码：354 / 359

页数：6

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