Spin pumping due to spin waves in magnetic vortex structure
Spin pumping due to spin waves in magnetic vortex structure
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DOI：
10.7567/apex.10.053002
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发表时间：
2017-04
影响因子：
2.3
通讯作者：
N. Hasegawa;K. Kondou;M. Kimata;Y. Otani
中科院分区：
文献类型：
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作者：
N. Hasegawa;K. Kondou;M. Kimata;Y. Otani
利用磁涡结构激发的各种自旋波模式，对铂丝进行了自旋抽运。径向和方位角模式是通过施加一个面内射频磁场的频率变化来激发的。我们观察到沿铂丝诱导的逆自旋霍尔电压的模式相关符号变化。微磁模拟表明，观察到的行为反映了自旋波的空间分布。这些发现表明，自旋泵浦可以用于小型磁性结构中受限自旋波模式空间分布的电检测。
We performed spin pumping into a Pt wire by using various spin-wave modes excited in a magnetic vortex structure. Radial and azimuthal modes were excited by applying an in-plane radiofrequency magnetic field with a variable frequency. We observed a mode-dependent sign change in the inverse spin Hall voltage induced along the Pt wire. Micromagnetic simulation revealed that the observed behavior reflected the spatial distribution of the spin wave. These findings suggest that spin pumping can be used for the electrical detection of the spatial distribution of confined spin-wave modes in small magnetic structures.