Experimental evidences of a large extrinsic spin Hall effect in AuW alloy

We report an experimental study of a gold-tungsten alloy (7% at. W concentration in Au host) displaying remarkable properties for spintronics applications using both magneto-transport in lateral spin valve devices and spin-pumping with inverse spin Hall effect experiments. A very large spin Hall ang...

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Published inarXiv.org
Main Authors Laczkowski, P, J -C Rojas-Sánchez, Savero-Torres, W, Jaffrès, H, Reyren, N, Deranlot, C, Notin, L, Beigné, C, Marty, A, J -P Attané, Vila, L, J -M George, Fert, A
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.08.2014
Subjects
Damping
Diffusion length
Electromagnetism
Gold
Hall effect
Lateral stability
Magnetic properties
Organic chemistry
Physics - Mesoscale and Nanoscale Physics
Spin valves
Spintronics
Tungsten base alloys
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Summary:We report an experimental study of a gold-tungsten alloy (7% at. W concentration in Au host) displaying remarkable properties for spintronics applications using both magneto-transport in lateral spin valve devices and spin-pumping with inverse spin Hall effect experiments. A very large spin Hall angle of about 10% is consistently found using both techniques with the reliable spin diffusion length of 2 nm estimated by the spin sink experiments in the lateral spin valves. With its chemical stability, high resistivity and small induced damping, this AuW alloy may find applications in the nearest future.
ISSN:2331-8422
DOI:10.48550/arxiv.1403.7090