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Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities by Laczkowski, P.; Fu, Y.; Yang, H.; Rojas-Sánchez, J. -C.; Noel, P.; Pham, V. T.; Zahnd, G.; Deranlot, C.; Collin, S.; Bouard, C.; Warin, P.; Maurel, V.; Chshiev, M.; Marty, A.; Attané, J. -P.; Fert, A.; Jaffrès, H.; Vila, L.; George, J. -M. is a scholarly article available to read on EtoBox.

What is Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities about?

We present measurements of the Spin Hall Effect (SHE) in AuW and AuTa alloys for a large range of W or Ta concentrations by combining experiments on lateral spin valves and Ferromagnetic-Resonance/spin pumping technique. The main result is the identification of a large enhancement of the Spin Hall Angle (SHA) by the side-jump mechanism on Ta impurities, with a SHA as high as + 0.5 (i.e $50\%$) for about 10\% of Ta. In contrast the SHA in AuW does not exceed + 0.15 and can be explained by intrinsic SHE of the alloy without significant extrinsic contribution from skew or side-jump scattering by W impurities. The AuTa alloys, as they combine a very large SHA with a moderate resistivity (smaller than $85\,\mu\Omega.cm$), are promising for spintronic devices exploiting the SHE.

Author

Laczkowski, P.; Fu, Y.; Yang, H.; Rojas-Sánchez, J. -C.; Noel, P.; Pham, V. T.; Zahnd, G.; Deranlot, C.; Collin, S.; Bouard, C.; Warin, P.; Maurel, V.; Chshiev, M.; Marty, A.; Attané, J. -P.; Fert, A.; Jaffrès, H.; Vila, L.; George, J. -M.

Published

2017

Language

EN