论文标题
在磁性涡流中的三麦克农子分裂的非局部刺激
Nonlocal stimulation of three-magnon splitting in a magnetic vortex
论文作者
论文摘要
我们提出了一项关于在涡流平衡状态下磁盘中刺激的三麦克农裂的组合数值，理论和实验研究。我们的微磁模拟和Brillouin-light-Scattering结果证实，通过在磁盘旁边的波导中传播的镁元素之一，可以通过激发二次模式之一来触发三块麦克努因分裂。该实验表明，在次级模式的特征频率周围的扩展激发能力和广泛的频率中，刺激是可能的。速率方程计算预测了对刺激的瞬时响应，并且以可持续的方式触发三麦克农的可能性甚至超过阈值。这些预测是使用时间分辨的Brillouin-Light-Scertering测量结果在实验中证实的，并且与理论结果既良好质量一致”。我们认为，受刺激的三麦克农拆分的可控机制可以提供利用基于镁的非线性网络作为储层或神经形态计算的硬件的可能性。
We present a combined numerical, theoretical and experimental study on stimulated three-magnon splitting in a magnetic disk in the vortex equilibrium state. Our micromagnetic simulations and Brillouin-light-scattering results confirm that three-magnon splitting can be triggered even below threshold by exciting one of the secondary modes by magnons propagating in a waveguide next to the disk. The experiments show that stimulation is possible over an extended range of excitation powers and a wide range of frequencies around the eigenfrequencies of the secondary modes. Rate-equation calculations predict an instantaneous response to stimulation and the possibility to prematurely trigger three-magnon splitting even above threshold in a sustainable manner. These predictions are confirmed experimentally using time-resolved Brillouin-light-scattering measurements and are in a good qualitative agreement with the theoretical results. We believe that the controllable mechanism of stimulated three-magnon splitting could provide a possibility to utilize magnon-based nonlinear networks as hardware for reservoir or neuromorphic computing.
