Keywords:magnetoresistance, first principles calculations, angular dependent magnetoresistance
Interest in magnetoresistance (MR) in bilayer films, composed of ferromagnetic and nonmagnetic heavy metals, has recently increased. Among the MR phenomena is the novel Spin Hall magnetoresistance effect which depends on the angle between magnetization direction of film and the applied current. In the heterostructure of Co/Pt(111), for example, the MR ratio has been found to be up to 2%. Although the MR has been theoretically explained by using a drift diffusion model, explicit estimations on the novel angular dependent MR (ADMR) effect using first principles approach are still lacking and may be further desired. Here, we carried out systematically first principles calculations for the ADMR in metallic bilayers of Co and 5d (Ta, W, Re, Os, Ir, and Pt) metal thin films, based on the generalized gradient approximation by using the Full-potential linearized augmented plane wave method including spin-orbit coupling (SOC).