On the origin of the giant SHE in Cu(Bi) alloys

Dmitry V. Fedorov; Christian Herschbach; Sergey Ostanin; Ingrid Mertig; Martin Gradhand; Kristina Chadova; Diemo Ködderitzsch; Hubert Ebert

doi:10.1103/physrevb.88.085116

arXiv · 1306.1471

On the origin of the giant SHE in Cu(Bi) alloys

Dmitry V. Fedorov·Christian Herschbach·Sergey Ostanin·Ingrid Mertig·Martin Gradhand·Kristina Chadova·Diemo Ködderitzsch·Hubert Ebert

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Abstract

Two years after the prediction of a giant spin Hall effect for the dilute Cu(Bi) alloy [Gradhand et al., Phys. Rev. B 81, 245109 (2010)], a comparably strong effect was measured in thin films of Cu(Bi) alloys by Niimi et al. [Phys. Rev. Lett. 109, 156602 (2012)]. Both theory and experiment consider the skew-scattering mechanism to be responsible, however they obtain opposite sign for the spin Hall angle. Based on a detailed analysis of existing theoretical results, we explore differences between theory and experiment.

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Dmitry V. Fedorov, Christian Herschbach, Sergey Ostanin, Ingrid Mertig, Martin Gradhand, Kristina Chadova, Diemo Ködderitzsch, Hubert Ebert. 2013-06-06. On the origin of the giant SHE in Cu(Bi) alloys. https://doi.org/10.1103/physrevb.88.085116

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