论文标题
超越旋转运动：涡旋旋转扭矩振荡器中的动态C状态
Beyond the gyrotropic motion: dynamic C-state in vortex spin torque oscillators
论文作者
论文摘要
在本研究中，我们研究了磁性涡流核心在纳米柱旋转扭矩纳米振荡器的粘附磁盘中的旋转（G）运动以外的动力学模式。它的特征是与C形磁化分布相关的平面圆形进动。我们显示了G和C状态模式之间的过渡，该模式被发现在电流控制范围内纯粹是随机的。通过微磁模拟支持我们的实验发现，我们认为结果为STOS的动态和随机控制提供了新的机会，例如在神经形态网络中实现这很有趣。
In the present study, we investigate a dynamical mode beyond the gyrotropic (G) motion of a magnetic vortex core in a confined magnetic disk of a nano-pillar spin torque nano oscillator. It is characterized by the in-plane circular precession associated to a C-shaped magnetization distribution. We show a transition between G and C-state mode which is found to be purely stochastic in a current-controllable range. Supporting our experimental findings with micromagnetic simulations, we believe that the results provide novel opportunities for the dynamic and stochastic control of STOs, which could be interesting to be implemented for example in neuromorphic networks.
