Anti-damping spin transfer torque through epitaxial nickel oxide

被引：118

作者：

Moriyama, Takahiro ^{[1
]}

Takei, So ^{[2
]}

Nagata, Masaki ^{[1
]}

Yoshimura, Yoko ^{[1
]}

Matsuzaki, Noriko ^{[1
]}

Terashima, Takahito ^{[3
]}

Tserkovnyak, Yaroslav ^{[2
]}

Ono, Teruo ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[3] Kyoto Univ, Res Ctr Low Temp & Mat Sci, Kyoto 6068501, Japan

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 16期

基金：

日本学术振兴会;

关键词：

MAGNETIC MULTILAYER; DRIVEN; EXCITATION;

D O I：

10.1063/1.4918990

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We prepare the high quality epitaxial MgO(001)[100]/Pt(001)[100]/NiO(001)[100]/FeNi/SiO2 films to investigate the spin transport in the NiO antiferromagnetic insulator. The ferromagnetic resonance measurements of the FeNi under a spin current injection from the Pt by the spin Hall effect revealed the change of the ferromagnetic resonance linewidth depending on the amount of the spin current injection. The results can be interpreted that there is an angular momentum transfer through the NiO. A high efficient angular momentum transfer we observed in the epitaxial NiO can be attributed to the well-defined orientation of the antiferromagnetic moments and the spin quantization axis of the injected spin current. (C) 2015 AIP Publishing LLC.

引用

页数：4

共 22 条

[1] Three-dimensional spin orientation in antiferromagnetic domain walls of NiO studied by x-ray magnetic linear dichroism photoemission electron microscopy [J].