论文标题
自旋超流体
Spin superfluidity
论文作者
论文摘要
超流体（超导性）的现象是在宏观距离上运输质量（电荷）的可能性，而没有必要的耗散。在具有顺序参数空间易于平面拓扑的磁序介质中，尽管没有严格的自旋保护法，但旋转的超流体运输也可能是可能的。本文介绍了自旋超流体理论中的三个关键问题：顺序参数空间的拓扑，兰道的超流量标准以及通过相滑事件衰减的超流体电流的衰减，其中磁性涡流交叉电流流线。还调查了检测自旋超流体的实验。
The phenomenon of superfluidity (superconductivity) is a possibility of transport of mass (charge) on macroscopical distances without essential dissipation. In magnetically ordered media with easy-plane topology of the order parameter space the superfluid transport of spin is also possible despite the absence of the strict conservation law for spin. The article addresses three key issues in the theory of spin superfluidity: topology of the order parameter space, Landau criterion for superfluidity, and decay of superfluid currents via phase slip events, in which magnetic vortices cross current streamlines. Experiments on detection of spin superfluidity are also surveyed.
