Fig. 2: Angle dependence of spin-galvanic signal in the graphene-MoTe2 heterostructure.
a A schematic illustration of the spin-galvanic signal measurement geometry with directions of an applied magnetic field (B), the injector ferromagnet magnetization (M), the spin current (Is), and external magnetic field angle (θ) in x–y plane. b The manifested spin-galvanic signal (VSGE) as a function of the magnetic field (B) sweep for various measurement angle (θ) orientations in the x–y plane, with an application of I = 60 µA in Dev 2 at room temperature. A linear background is subtracted from the data and shifted in the y-axis for clarity (see Supplementary Fig. S8). c As a control experiment, the non-local signal as a function of magnetic field sweep (B) for various in-plane (x–y plane) measurement angle (θ) orientations in only graphene Hall cross at room temperature with I=100 μA and Vg = −50V along with the measurement geometry in the inset. The signals are shifted in the y-axis for clarity. d The magnitude of spin-galvanic signals (ΔVSGE) in graphene-MoTe2 heterostructure and non-local signal (Vnl) in the only graphene as a function of the applied magnetic field angle (θ). The solid line is the cos(θ) function. The error bars are calculated from the noise level of the manifested signals and not clearly visible because error bars are smaller than the data points.
