论文标题
耦合纳米磁体中的质地波动和新兴动态
Texture fluctuations and emergent dynamics in coupled nanomagnets
论文作者
论文摘要
我们分析了两个流浪场耦合元件中磁化纹理的热波动，形成了中辛。为此，绘制了与纹理的热动力学相关的能量景观，并确定了不对称的能屏障。这些障碍可以通过改变分离中旋蛋白的差距来改变。此外，边缘之间的耦合导致在亚稳态最小值处能量表面的曲率中的各向异性。这会产生边缘模式的动态模式分裂，并影响尝试切换频率。因此，我们阐明了热浴中的镁在边缘处产生磁化的随机波动的机制。
We analyse the thermal fluctuations of magnetization textures in two stray field coupled elements, forming mesospins. To this end, the energy landscape associated with the thermal dynamics of the textures is mapped out and asymmetric energy barriers are identified. These barriers are modified by changing the gap that separates the mesospins. Moreover, the coupling between the edges leads to an anisotropy in the curvature of the energy surface at the metastable minima. This yields a dynamic mode splitting of the edge modes and affects the attempt switching frequencies. Thus, we elucidate the mechanism with which the magnons in the thermal bath generate the stochastic fluctuations of the magnetization at the edges.
