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

被引：487

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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