We report that by heating samples the critical current density for magnetization reversal (Jc) in a single perpendicularly magnetized layer can be decreased from 2.6 × 107A/cm2 to about 1 × 106A/cm2 for a temperature increase of 143 K. The nonlinear dependence of Jc on the perpendicular anisotropy field indicates that the coherent magnetic switching model cannot fully explain the current-induced perpendicular switching. By considering the current-induced domain nucleation and expansion during switching, we conclude that Jc also depends on current-induced domain behavior. Moreover, by reversing the heat flow direction, we demonstrate that the thermal related spin transfer torques have little influence on the thermally assisted magnetic switching. © 2014 AIP Publishing LLC.
CITATION STYLE
Bi, C., Huang, L., Long, S., Liu, Q., Yao, Z., Li, L., … Liu, M. (2014). Thermally assisted magnetic switching of a single perpendicularly magnetized layer induced by an in-plane current. Applied Physics Letters, 105(2). https://doi.org/10.1063/1.4890539
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