Scaling of Spin Hall Angle in 3d, 4d, and 5d Metals from Y3Fe5O12/Metal Spin Pumping

被引：471
|
作者：
Wang, H. L. [1 ]
Du, C. H. [1 ]
Pu, Y. [1 ]
Adur, R. [1 ]
Hammel, P. C. [1 ]
Yang, F. Y. [1 ]
机构：
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 19期
关键词：
FERROMAGNETIC-RESONANCE;
D O I：
10.1103/PhysRevLett.112.197201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have investigated spin pumping from Y3Fe5O12 thin films into Cu, Ag, Ta, W, Pt, and Au with varying spin-orbit coupling strengths. From measurements of Gilbert damping enhancement and inverse spin Hall signals spanning 3 orders of magnitude, we determine the spin Hall angles and interfacial spin mixing conductances for the six metals. The spin Hall angles largely vary as Z(4) (Z: atomic number), corroborating the role of spin- orbit coupling. Amongst the four 5d metals, the variation of the spin Hall angle is dominated by the sensitivity of the d-orbital moment to the d-electron count, confirming theoretical predictions.
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页数：5
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