Giant Spin Hall Effect Induced by Skew Scattering from Bismuth   Impurities inside Thin Film CuBi Alloys
  We demonstrate that a giant spin Hall effect (SHE) can be induced by introducing a small amount of Bi impurities in Cu. Our analysis based on a new 3-dimensional finite element treatment of spin transport shows that the sign of the SHE induced by the Bi impurities is negative and its spin Hall (SH) angle amounts to -0.24. Such a negative large SH angle in CuBi alloys can be explained by applying the resonant scattering model proposed by Fert and Levy [Phys. Rev. Lett. 106, 157208 (2011)] to 6p impurities. 
Y. Niimi, Y. Kawanishi, D. H. Wei, C. Deranlot, H. X. Yang, M.   Chshiev, T. Valet, A. Fert, and Y. Otani
cond-mat.mes-hall cond-mat.mtrl-sci