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arXiv · 1403.5033

Current-induced switching of magnetic tunnel junctions: Effects of field-like spin-transfer torque, pinned-layer magnetization orientation and temperature

R. K. Tiwari·M. H. Jhon·N. Ng·D. J. Srolovitz·Chee Kwan Gan
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Abstract

We study current-induced switching in magnetic tunnel junctions (MTJs) in the presence of a field-like spin-transfer torque and titled pinned-layer magnetization in the high current limit at finite temperature. We consider both the Slonczewski and field-like torques with coefficients $a_J$ and $b_J $, respectively. At finite temperatures, $\sigma= b_J/a_J = \pm1$ leads to a smaller mean switching time compared that with $\sigma = 0$. The reduction of switching time in the presence of the field-like term is due to the alignment effect (for $\sigma > 0$) and the initial torque effect.

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R. K. Tiwari, M. H. Jhon, N. Ng, D. J. Srolovitz, Chee Kwan Gan. 2014-03-20. Current-induced switching of magnetic tunnel junctions: Effects of field-like spin-transfer torque, pinned-layer magnetization orientation and temperature. https://doi.org/10.1063/1.4862182

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