2017/10/26 by Z. R. Yan, Xingtao Jia, Yan, Zhengren +5
Physics and Astronomy · Materials Science · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Magnetic and transport properties of perovskites and related materials
paper · pdf · doi:10.48550/arxiv.1710.09666
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.