Thermally assisted magnetization reversal in the presence of a spin-transfer torque

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  • 17 February 2003
Abstract
The effect of the spin-transfer torque on thermally assisted magnetization reversal is studied via the classical transition-rate theory and micromagnetic simulations. It is found that the law of thermal agitation (N\'{e}el-Brown's relaxation formula) for spin-torque-induced magnetization reversal is qualitatively different from that for magnetic field driven reversal. We have determined a scaling relation to describe the novel thermal agitation. The analytic results are further supported by micromagnetic simulations and by existing experiments.

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