Fig. 2: Bias-dependent TMR.

a TMR curves under positive bias in the range of 0.1 to 0.9 V at 10 K. b TMR curves under negative bias in the range of −0.1 to −0.9 V at 10 K. c The I-Vb curves of the device in parallel and antiparallel states at 10 K. d TMR as a function of the bias voltage at several specific temperatures.