论文标题
沮丧的磁铁中动态稳定的自旋超流体
Dynamically stabilized spin superfluidity in frustrated magnets
论文作者
论文摘要
我们研究了自旋超流体的发作，即由拓扑自旋纹理介导的相干自旋传输，在由外部磁场产生的沮丧的交换为主的磁系统中。我们表明，对于在非局部磁转运实验中使用的典型装置几何形状，磁场可稳定旋转超流，直至临界电流。对于给定的电流，临界场取决于纹理的进攻频率，可以单独控制。我们将自旋超流体的这种动态稳定与基于拓扑稳定的常规方法进行了对比。
We study the onset of spin superfluidity, namely coherent spin transport mediated by a topological spin texture, in frustrated exchange-dominated magnetic systems, engendered by an external magnetic field. We show that for typical device geometries used in nonlocal magnetotransport experiments, the magnetic field stabilizes a spin superflow against fluctuations, up to a critical current. For a given current, the critical field depends on the precessional frequency of the texture, which can be separately controlled. We contrast such dynamic stabilization of a spin superfluid to the conventional approaches based on topological stabilization.
