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arXiv · 1710.09666

Spin dynamics in MgO based magnetic tunnel junctions with dynamical exchange coupling

Zhengren Yan·Xingtao Jia·Pingping Wu·Minghui Qin
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Abstract

We study the spin dynamics in Fe|MgO|Fe tunnel junction with the dynamical exchange coupling by coupled Landau-Lifshitz-Gilbert equations. The effects of spin pumping on the spin dynamics are investigated in detail. It is observed that the spin pumping can stabilize a quasi-antiparallel state rather than a quasi-parallel one. More interestingly, our work suggests that the spin pumping torque can efficiently modulate the magnetization, similar to the thermal-bias-driven and electricbias-driven spin torques.

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Zhengren Yan, Xingtao Jia, Pingping Wu, Minghui Qin. 2017-10-26. Spin dynamics in MgO based magnetic tunnel junctions with dynamical exchange coupling. https://arxiv.org/abs/1710.09666

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