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Temperature dependence of spin-transfer-induced switching of nanomagnets
I N Krivorotov1, N C Emley, A G F Garcia
1Cornell University, Ithaca, New York 14853, USA.
Abstract:
We measure the temperature, magnetic-field, and current dependence for the switching of nanomagnets by a spin-polarized current. Depending on current bias, switching can occur between either two static magnetic states or a static state and a current-driven precessional mode. In both cases, the switching is thermally activated and governed by the sample temperature, not a higher effective magnetic temperature. The activation barriers for switching between static states depend linearly on current, with a weaker dependence for dynamic to static switching.
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