Thermally assisted magnetic switching of a single perpendicularly magnetized layer induced by an in-plane current

  • Bi C
  • Huang L
  • Long S
 et al. 
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Abstract

We report that by heating samples the critical current density for magnetization reversal (Jc)ina single perpendicularly magnetized layer can be decreased from 2.6?107A/cm2 to about 1?106A/cm2 for a temperature increase of 143K. 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. V C 2014 AIP Publishing LLC.[http://dx.doi.org/10.1063/1.4890539] Thermally

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Authors

  • Chong Bi

  • Lin Huang

  • Shibing Long

  • Qi Liu

  • Zhihong Yao

  • Ling Li

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