Inverse spin Hall effect in nanometer-thick yttrium iron garnet/Pt system
Inverse spin Hall effect in nanometer-thick yttrium iron garnet/Pt system
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DOI：
10.1063/1.4819157
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发表时间：
2013-08-19
影响因子：
4
通讯作者：
Fert, A.
中科院分区：
文献类型：
--
作者：
d'Allivy Kelly, O.;Anane, A.;Fert, A.
采用脉冲激光沉积法在钆镓石榴石衬底上生长了高质量的纳米厚度（20 nm、7 nm和4 nm）的钇铁石榴石（YIG）外延薄膜。20 nm厚膜的吉尔伯特阻尼系数为2.3 × 10 - 4，这是亚微米厚膜的最低值。我们证明了逆自旋霍尔效应（ISHE）检测传播自旋波使用Pt。随着YIG厚度的减小，ISHE电压的幅值和线形与吉尔伯特阻尼的增加有很好的相关性。已经进行了基于自旋霍尔效应的损耗补偿实验，但没有检测到磁化动力学的变化。(C)2013 AIP Publishing LLC.
High quality nanometer-thick (20 nm, 7 nm, and 4 nm) epitaxial Yttrium Iron Garnet (YIG) films have been grown on gadolinium gallium garnet substrates using pulsed laser deposition. The Gilbert damping coefficient for the 20 nm thick films is 2.3 x 10(-4) which is the lowest value reported for sub-micrometric thick films. We demonstrate Inverse spin Hall effect (ISHE) detection of propagating spin waves using Pt. The amplitude and the lineshape of the ISHE voltage correlate well to the increase of the Gilbert damping when decreasing thickness of YIG. Spin Hall effect based loss-compensation experiments have been conducted but no change in the magnetization dynamics could be detected. (C) 2013 AIP Publishing LLC.