Spin pumping by parametrically excited short-wavelength spin waves
Spin pumping by parametrically excited short-wavelength spin waves
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DOI：
10.1063/1.3652911
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发表时间：
2011-10-17
影响因子：
4
通讯作者：
Demokritov, S. O.
中科院分区：
文献类型：
--
作者：
Kurebayashi, H.;Dzyapko, O.;Demokritov, S. O.
我们采用平行和垂直两种参数泵浦技术，在一种Y-Fe石榴石薄膜中激发短波自旋波，并借助相邻铂层中的逆自旋霍尔效应，研究了这两种泵浦方法所激发的自旋波产生的自旋流。我们观察到这些泵浦技术的明显的自旋流产生，发现效率几乎与激发的自旋波的波矢的大小和方向无关。这些实验结果对未来利用短波自旋波工作的自旋电子器件具有重要意义。(C)2011年美国物理研究所。[DOI：10.1063/1.3652911]
We use both parallel and perpendicular parametric pumping techniques to excite short-wavelength spin waves in an yttrium iron garnet film and study the spin current generation from spin waves excited by these pumping methods with the help of the inverse spin-Hall effect in the adjacent Pt layer. We observed clear spin current generations for these pumping techniques and find that the efficiency is nearly independent of the magnitude and the direction of the wave vectors of excited spin waves. These experimental results are important for future spintronic devices operated by short-wavelength spin waves. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3652911]