论文标题
正交旋转扭矩装置的动态相图：拓扑类别
Dynamic Phase Diagram of an Orthogonal Spin Torque device: Topological Category
论文作者
论文摘要
基于Macrospin模型，研究了正交旋转装置中游离层的磁化演化。在各种条件下，磁化载体的轨迹显示出丰富的非线性特性。相图以电流密度和极化分布的参数空间（平面内和面外偏光剂的比率）获得。这些动态阶段可以根据拓扑不同的非线性行为进行分类，即限制点和/或限制周期。拓扑分类对于在不同的动态条件下设计超快速旋转扭转器设备的拓扑分类是有意义的，例如记忆和振荡器等各种应用。
The magnetization evolution of the free layer in an orthogonal spin-torque device is studied based on a macrospin model. The trajectory of magnetization vector under various conditions has shown rich nonlinear properties. The phase diagram is obtained in the parameter spaces of current density and the polarization distribution (the ratio of in-plane and out-of-plane polarizers). These dynamic phases can be classified according to their nonlinear behaviors which are topologically different, namely limit point and/or limit cycle. The topological classification is meaningful to design the ultra-fast spin-torque devices under different dynamic conditions towards various applications such as memory and oscillators.
