Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth

被引：2
|
作者：
Nozaki, Yukio [1 ,2 ]
Watanabe, Sho D. [1 ]
Kobayashi, Takafumi [1 ]
Tanazawa, Tomoki [1 ]
机构：
[1] Keio Univ, Dept Phys, Yokohama, Kanagawa 2238522, Japan
[2] JST, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
APPLIED PHYSICS EXPRESS | 2015年 / 8卷 / 04期
基金：
日本科学技术振兴机构;
关键词：
MAGNETIC MULTILAYERS; ACCUMULATION; INJECTION; DRIVEN;
D O I：
10.7567/APEX.8.043001
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Modulation of ferromagnetic resonance (FMR) linewidth owing to a spin transfer torque (STT) caused by the absorption of a pure spin current in a permalloy nanowire is demonstrated. To exclude the STT induced by the spin-polarized current, the pure spin current was produced using a lateral spin-valve structure. Self-homodyne FMR detection without applying an external sense current was used for minimizing the influence of Joule heating on the FMR linewidth. The linear variation of the FMR linewidth caused by the STT was clearly observed when the electrical current generating the pure spin current was below 1 mA. (C) 2015 The Japan Society of Applied Physics
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页数：4
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