Electric detection of spin wave resonance using inverse spin-Hall effect
Electric detection of spin wave resonance using inverse spin-Hall effect
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DOI：
10.1063/1.3167826
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发表时间：
2009-06-29
影响因子：
4
通讯作者：
Saitoh, E.
中科院分区：
文献类型：
--
作者：
Ando, K.;Ieda, J.;Saitoh, E.
使用逆自旋霍尔效应 (ISHE) 研究了 Ni81Fe19/Pt 细线阵列中的自旋波谐振。 Ni81Fe19 层中的自旋波驱动自旋泵浦，磁化进动产生自旋电流，泵浦的自旋电流通过 Pt 层中的 ISHE 转换为充电电流。我们发现了一个横向于自旋电流的空间方向和自旋极化方向的电动势。实验结果表明，电动势的幅值与自旋波共振吸收强度成正比，使得纳米结构磁系统中自旋波共振的电学测量成为可能。
Spin wave resonance in Ni81Fe19/Pt thin wire arrays has been investigated using the inverse spin-Hall effect (ISHE). The spin wave in the Ni81Fe19 layer drives spin pumping, generation of spin currents from magnetization precession, and the pumped spin current is converted into a charge current by ISHE in the Pt layer. We found an electromotive force transverse to the spatial and the spin-polarization directions of the spin current. The experimental results indicate that the amplitude of the electromotive force is proportional to the spin wave resonance absorption intensity, enabling the electric measurement of spin wave resonance in nanostructured magnetic systems.