Universal Coarsening Dynamics of a Quenched Ferromagnetic Spin-1 Condensate.
Universal Coarsening Dynamics of a Quenched Ferromagnetic Spin-1 Condensate.
复制标题
淬火铁磁 Spin-1 凝聚体的通用粗化动力学。
DOI：
10.1103/physrevlett.116.025301
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发表时间：
2015
影响因子：
8.6
通讯作者：
P. B. Blakie
中科院分区：
文献类型：
--
作者：
L. Williamson;P. B. Blakie
我们证明了一个准二维自旋1冷凝淬火到铁磁相经历普遍粗化在其后期的时间动力学。淬火可以通过施加的磁场的突然变化来实现，并且根据最终值，铁磁相具有易轴（Ising）或易平面（XY）对称性，具有不同的动力学临界指数。我们的结果揭示了易平面相的分形畴结构和极核自旋涡旋在粗化动力学中的关键作用。
We demonstrate that a quasi-two-dimensional spin-1 condensate quenched to a ferromagnetic phase undergoes universal coarsening in its late time dynamics. The quench can be implemented by a sudden change in the applied magnetic field and, depending on the final value, the ferromagnetic phase has easy-axis (Ising) or easy-plane (XY) symmetry, with different dynamical critical exponents. Our results for the easy-plane phase reveal a fractal domain structure and the crucial role of polar-core spin vortices in the coarsening dynamics.