Figure 6: Optically measured anti-damping field of YIG/Pt. | Nature Communications

Figure 6: Optically measured anti-damping field of YIG/Pt.

From: Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures

Figure 6

(a) Current dependence of the differential Kerr signal of YIG/Pt device with the polarization of the light set to φp≈40° to minimize the contribution of the IP oscillation. Solid red lines in a are theoretical fits of the anti-damping-induced component of equation (6) to the experimental data. Dashed lines in a mark ΔθK=0. (b) The measured anti-damping field in YIG/Pt versus the current density through the Pt device. The error bars in b (obtained by linear regression) are smaller than the symbols. The solid red line in b is a linear fit to the data that yields the anti-damping coefficient λAL=(2.89±0.02) × 10−7 Oe A−1 cm2.

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