Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt

被引：232

作者：

Isasa, Miren ^{[1
]}

Villamor, Estitxu ^{[1
]}

Hueso, Luis E. ^{[1
,2
]}

Gradhand, Martin ^{[3
]}

Casanova, Felix ^{[1
,2
]}

机构：

[1] CIC NanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain

[2] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, Spain

[3] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 02期

基金：

欧洲研究理事会; 欧盟第七框架计划;

关键词：

CHARGE;

D O I：

10.1103/PhysRevB.91.024402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the spin transport and the spin Hall effect as a function of temperature for platinum (Pt) and gold (Au) in lateral spin valve structures. First, by using the spin absorption technique, we extract the spin diffusion length of Pt and Au. Secondly, using the same devices, we have measured the spin Hall conductivity and analyzed its evolution with temperature to identify the dominant scattering mechanisms behind the spin Hall effect. This analysis confirms that the intrinsic mechanism dominates in Pt whereas extrinsic effects are more relevant in Au. Moreover, we identify and quantify the phonon-induced skew scattering. We show that this contribution to skew scattering becomes relevant in metals such as Au, with a low residual resistivity.

引用

页数：7

共 44 条

[1] Spin pumping and anisotropic magnetoresistance voltages in magnetic bilayers: Theory and experiment [J].

Azevedo, A. ;

Vilela-Leao, L. H. ;

Rodriguez-Suarez, R. L. ;

Santos, A. F. Lacerda ;

Rezende, S. M. .

PHYSICAL REVIEW B, 2011, 83 (14)

[2]

Behin-Aein B, 2010, NAT NANOTECHNOL, V5, P266, DOI [10.1038/nnano.2010.31, 10.1038/NNANO.2010.31]

[3] METAL SPINTRONICS Electronics free of charge [J].

Chappert, Claude ;

Kim, Joo-Von .

NATURE PHYSICS, 2008, 4 (11) :837-838

[4] CURRENT-INDUCED SPIN ORIENTATION OF ELECTRONS IN SEMICONDUCTORS [J].

DYAKONOV, MI ;

PEREL, VI .

PHYSICS LETTERS A, 1971, A 35 (06) :459-&

[5] Surface enhanced spin-flip scattering in lateral spin valves [J].

Erekhinsky, Mikhail ;

Sharoni, Amos ;

Casanova, Felix ;

Schuller, Ivan K. .

APPLIED PHYSICS LETTERS, 2010, 96 (02)

[6] Spin Hall Effect Induced by Resonant Scattering on Impurities in Metals [J].

Fert, Albert ;

Levy, Peter M. .

PHYSICAL REVIEW LETTERS, 2011, 106 (15)

[7]

Gradhand Martin, 2012, SPIN, V2, DOI 10.1142/S2010324712500105

[8] Calculating the Berry curvature of Bloch electrons using the KKR method [J].

Gradhand, M. ;

Fedorov, D. V. ;

Pientka, F. ;

Zahn, P. ;

Mertig, I. ;

Gyoerffy, B. L. .

PHYSICAL REVIEW B, 2011, 84 (07)

[9] Extrinsic Spin Hall Effect from First Principles [J].

Gradhand, Martin ;

Fedorov, Dmitry V. ;

Zahn, Peter ;

Mertig, Ingrid .

PHYSICAL REVIEW LETTERS, 2010, 104 (18)

[10] Intrinsic spin Hall effect in platinum: First-principles calculations [J].

Guo, G. Y. ;

Murakami, S. ;

Chen, T. -W. ;

Nagaosa, N. .

PHYSICAL REVIEW LETTERS, 2008, 100 (09)

← 1 2 3 4 5 →