Impact of the crystal orientation on spin-orbit torques in Fe/Pd bilayers

被引：4

作者：

Kumar, Ankit ^{[1
]}

Behera, Nilamani ^{[1
]}

Gupta, Rahul ^{[1
]}

Husain, Sajid ^{[1
]}

Stopfel, Henry ^{[1
]}

Kapaklis, Vassilios ^{[2
]}

Brucas, Rimantas ^{[1
]}

Svedlindh, Peter ^{[1
]}

机构：

[1] Uppsala Univ, Dept Mat Sci & Engn, Box 534, SE-75121 Uppsala, Sweden

[2] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75121 Uppsala, Sweden

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2020年 / 53卷 / 35期

基金：

瑞典研究理事会;

关键词：

epitaxy; spin orbit torques; spin torque ferromagnetic resonance; magnetic heterostructure; Gilbert damping;

D O I：

10.1088/1361-6463/ab8ed9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin-orbit torques in ferromagnetic/non-magnetic heterostructures offer more energy-efficient means to realize spin-logic devices; however, their strengths are determined by the heterostructure interface. This work examines the impact of crystal orientation on the spin-orbit torque efficiency in different Fe/Pd bilayer systems. Results from spin torque ferromagnetic resonance measurements evidence that the damping-like torque efficiency is higher in epitaxial than in polycrystalline bilayer structures while the field-like torque is negligible in all bilayer structures. The strength of the damping-like torque decreases with deterioration of the bilayer epitaxial quality. The present finding provides fresh insight for the enhancement of spin-orbit torques in magnetic heterostructures.

引用

页数：7

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