Improvement of the yttrium iron garnet/platinum interface for spin pumping-based applications
Improvement of the yttrium iron garnet/platinum interface for spin pumping-based applications
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DOI：
10.1063/1.4813315
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发表时间：
2013-07-08
影响因子：
4
通讯作者：
Hillebrands, B.
中科院分区：
文献类型：
--
作者：
Jungfleisch, M. B.;Lauer, V.;Hillebrands, B.
定量地研究了在镀铂前对钇铁石榴石（YIG）进行表面处理对自旋泵浦效率和自旋混合电导的影响。铁磁共振驱动的自旋泵浦将自旋极化电流注入到Pt层中，通过逆自旋霍尔效应将其转换为电动势。我们的实验表明，自旋泵浦效应确实强烈地依赖于YIG/Pt界面条件。我们测量的逆自旋霍尔电压和自旋混合电导的增强超过两个数量级的改进的样品制备。(C)2013 AIP Publishing LLC.
The dependence of the spin pumping efficiency and the spin mixing conductance on the surface processing of yttrium iron garnet (YIG) before the platinum (Pt) deposition has been investigated quantitatively. The ferromagnetic resonance driven spin pumping injects a spin polarized current into the Pt layer, which is transformed into an electromotive force by the inverse spin Hall effect. Our experiments show that the spin pumping effect indeed strongly depends on the YIG/Pt interface condition. We measure an enhancement of the inverse spin Hall voltage and the spin mixing conductance by more than two orders of magnitude with improved sample preparation. (C) 2013 AIP Publishing LLC.