1306.1471 (Dmitry V. Fedorov et al.)

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

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

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.

View original: http://arxiv.org/abs/1306.1471