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We analyze the experimentally obtained spin-current-related magnetoresistancein epitaxial Pt/Co bilayers by using a drift-diffusion model that incorporatesboth bulk spin Hall effect and interfacial Rashba-Edelstein effect (REE). Themagnetoresistance analysis yields, for the Pt/Co interface, atemperature-independent Rashba parameter in the order of 1e-11 eV m that agreeswith theoretical calculations, along with an effective interfacial REEthickness of several angstroms which is in overall consistency with ourprevious spin-orbit torque analysis. In particular, our results suggest thatboth bulk and interface charge-spin current inter-conversions need to be takeninto account for the spin-current-related magnetoresistance analysis inhighly-conductive magnetic hetero-structures such as the epitaxial Pt/Cobilayers.

Spin-current-related magnetoresistance in epitaxial Pt/Co bilayers in the presence of spin Hall effect and Rashba-Edelstein effect