Spin-torque ferromagnetic resonance in electrochemically etched metallic device

被引：0

作者：

Suzuki, Ryuki ^{[1
]}

Haku, Satoshi ^{[1
]}

Hayashi, Hiroki ^{[1
]}

Ando, Kazuya ^{[1
,2
]}

机构：

[1] Keio Univ, Dept Appl Phys & Physicoinformat, Yokohama, Kanagawa 2238522, Japan

[2] Keio Univ, Ctr Spintron Res Network, Yokohama, Kanagawa 2238522, Japan

来源：

APPLIED PHYSICS EXPRESS | 2020年 / 13卷 / 04期

关键词：

spin-orbit torque; spin-torque ferromagnetic resonance; ionic liquid; spintronics; ORBIT TORQUE; MAGNETIZATION; ELECTRONS;

D O I：

10.35848/1882-0786/ab8347

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate the quantification of spin-orbit torque efficiencies using spin-torque ferromagnetic resonance (ST-FMR) combined with electrochemical etching of a Fe/Pt bilayer. The electrochemical etching of the ST-FMR device using an ionic liquid enables to study spin-orbit effective fields, as well as an Oersted field, by varying the ferromagnetic-layer thickness. This allows to disentangle the field-like (FL) effective field and Oersted field, enabling to determine the damping-like and FL torque efficiencies in the single device. This robust technique opens a possibility to explore the spin-orbit torques in exotic materials and systems.

引用

页数：4

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