Spin Magnetoresistance of Thin-Film Structures Made of Manganite and Material with Strong Spin-Orbital Interaction

— The paper presents the results of experimental determination of the spin Hall angle in a Pt/La 0.7 Sr 0.3 MnO 3 bilayer metal/ferromagnetic structure inferred from angular dependences of longitudinal and transverse spin magnetoresistance in configuration of the planar Hall effect. The value of the spin Hall angle determined from the longitudinal magnetoresistance is θ Hx ≈ 0.016, and that from the transverse magnetoresistance is θ Hy ≈ 0.018, whereas for SrIrO 3 /La 0.7 Sr 0.3 MnO 3 heterostructures the ratio of values of the transverse spin Hall angle to the longitudinal one appears to be substantially higher, θ Hy /θ Hx ≈ 9, which is apparently caused by a layer with a high spin conductance formed at the SrIrO 3 /La 0.7 Sr 0.3 MnO 3 interface.