Spin Hall controlled magnonic microwaveguides
Spin Hall controlled magnonic microwaveguides
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DOI：
10.1063/1.4871519
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发表时间：
2014-04-14
影响因子：
4
通讯作者：
Demokritov, S. O.
中科院分区：
文献类型：
--
作者：
Demidov, V. E.;Urazhdin, S.;Demokritov, S. O.
利用空间分辨磁光光谱研究了自旋霍尔效应对微观磁振子波导中自旋波激发和传播的影响。我们发现自旋霍尔效应不仅增加了自旋波的传播长度，而且由于感应天线附近的动态磁化率的增加而导致激发效率的增加。我们表明，传输长度增强的效率是强烈依赖于激发的自旋波模式的类型和它的波长。(C)2014 AIP Publishing LLC.
We use space-resolved magneto-optical spectroscopy to study the influence of spin Hall effect on the excitation and propagation of spin waves in microscopic magnonic waveguides. We find that the spin Hall effect not only increases the spin-wave propagation length, but also results in an increased excitation efficiency due to the increase of the dynamic susceptibility in the vicinity of the inductive antenna. We show that the efficiency of the propagation length enhancement is strongly dependant on the type of the excited spin-wave mode and its wavelength. (C) 2014 AIP Publishing LLC.