Inverse Spin Hall Effect by Spin-Pumping in Co_2Cr_{0.4}Fe_{0.6}Al/Pt Structures

• Authors: I. Gościańska , J. Dubowik
• Languages of publication: EN

Abstracts

EN

Inverse spin Hall effect consists in conversion of spin currents into electric currents and has recently been observed using spin-pumping operated by ferromagnetic resonance in permalloy/Pt(Cr) thin film structures. We prepared several Co_2Cr_{0.4}Fe_{0.6}Al/Pt thin film structures to observe for the first time inverse spin Hall effect in bilayer structures comprising ferromagnetic half-metallic Heusler alloy. In but a few Co_2Cr_{0.4}Fe_{0.6}Al/Pt samples we succeeded in observing inverse spin Hall effect voltage of few microvolts by spin pumping resulting from ferromagnetic resonance. This confirms that spin polarized current can be transferred into Pt layer. Inverse spin Hall effect was 2-3 times larger than that detected in permalloy/Pt bilayer under the same conditions.

Keywords

EN

72.25.Rb; 75.47.-m; 76.50.+g

Discipline

• 75.47.-m: Magnetotransport phenomena; materials for magnetotransport(for spintronics, see 85.75.-d; see also 72.25.-b Spin polarized transport; 72.15.Gd Galvanomagnetic and other magnetotransport effects; for magnetotransport effects in thin films, see 73.50.Jt; see also 73.43.Qt Magnetoresistance)
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)
• 72.25.Rb: Spin relaxation and scattering

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 851-853

Dates

published

2010-11

Contributors

author

I. Gościańska

• Department of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

J. Dubowik

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.118.851