Spin-scattering asymmetry at half-metallic-ferromagnet|ferromagnet interface

We study spin-scattering asymmetry at the interface of two ferromagnets (FMs) based on a half-metallic Co$_{2}$Fe$_{0.4}$Mn$_{0.6}$Si (CFMS)/CoFe interface. First-principles ballistic transport calculations Landauer formula for (001)-CoFe/CFMS/CoFe indicate strong spin-dependent conductance CFMS/CoFe interface, suggesting large coefficient ($\gamma$). Fully epitaxial current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) pseudo-spin-valve (PSV) devices involving CoFe/CFMS/Ag/CFMS/CoFe structures exhibit an enhancement in MR output owing to formation room temperature (RT). This is well reproduced qualitatively by simulation generalized two-current series-resistor model with considering presence $\gamma$ half-metallicity CFMS, and combinations terminated atoms interfaces CPP-GMR PSV structure. show direct evidence FM/FM its impact effect even RT.