Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper

被引：194

作者：

Niimi, Y. ^{[1
]}

Morota, M. ^{[1
]}

Wei, D. H. ^{[1
]}

Deranlot, C. ^{[2
,3
]}

Basletic, M. ^{[4
]}

Hamzic, A. ^{[4
]}

Fert, A. ^{[2
,3
]}

Otani, Y. ^{[1
,5
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[2] Univ Paris 11, F-91405 Orsay, France

[3] CNRS Thales, Unite Mixte Phys, F-91767 Palaiseau, France

[4] Univ Zagreb, Fac Sci, Dept Phys, HR-10002 Zagreb, Croatia

[5] RIKEN ASI, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.106.126601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the extrinsic spin Hall effect induced by Ir impurities in Cu by injecting a pure spin current into a CuIr wire from a lateral spin valve structure. While no spin Hall effect is observed without Ir impurity, the spin Hall resistivity of CuIr increases linearly with the impurity concentration. The spin Hall angle of CuIr, (2.1 +/- 0.6)% throughout the concentration range between 1% and 12%, is practically independent of temperature. These results represent a clear example of predominant skew scattering extrinsic contribution to the spin Hall effect in a nonmagnetic alloy.

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页数：4

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