The magnetization dynamics of two parallelly coupled spin torque oscillators, destabilization of steady states, and removal of multistability are investigated by taking into account the influence of field-like torque. It is shown that the existence of such torque can cancel the effect of damping and can, therefore, cause the oscillators to exhibit synchronized oscillations in response to direct current. Furthermore, our results show that the presence of field-like torque enhances the power and $Q$ -factor of the synchronized oscillations. The validity of the above results is confirmed by numerical and analytical studies based on the stochastic Landau–Lifshitz–Gilbert–Slonczewski equation.

中文翻译：

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类场力矩对自旋力矩振荡器同步的影响

通过考虑类场转矩的影响，研究了两个平行耦合的自旋转矩振荡器的磁化动力学、稳态的不稳定和多稳态的去除。结果表明，这种转矩的存在可以抵消阻尼的影响，因此可以使振荡器响应直流电而表现出同步振荡。此外，我们的结果表明，场状扭矩的存在增强了同步振荡的功率和 Q 因子。基于随机 Landau-Lifshitz-Gilbert-Slonczewski 方程的数值和分析研究证实了上述结果的有效性。