Spin Hall Effect Induced in Ferromagnetic Metal-Heavy Metal Interface : a First Principles study^*

Spin Hall effect, a generation of transverse spin current from the longitudinal current, has received a lot of attention in both theory and experiment, which have many potentials in spintronic devices. Here, spin Hall effect is expected in FM/HM interface. In this study, we investigate various types of FM/HM interfaces (FM=Fe and Co) and (HM=Pt, Pd, Ta, W) using density functional theory with Wannier function approach to explicitly calculate the transverse spin Hall conductivity in the framework of Kubo formula. The spin Hall conductivity found at some interfaces may invite serious exploration. To understand the origin of spin Hall effect at interfaces, the analysis of k-resolved Berry curvature based on band structure are exhaustively presented.