Fig. 4: Second harmonic measurement and BMER signal of the Pt3Sn sample with an adjacent FM layer.

a Second harmonic resistance of sample 2 (Pt3Sn(10 nm)/CoFeB(6 nm)/capping layer), the applied current is 2.6 mA. b The field-dependent plot shows the contribution of ANE + SSE, USMR, BMER, and NE, respectively. c BMER ratio for Pt3Sn samples with and without an adjacent CoFeB layer. The adjacent CoFeB layer can increase the BMER value by a factor of 2.35.