Spontaneous magnetization and structure formation in a spin-1 ferromagnetic Bose-Einstein condensate
Spontaneous magnetization and structure formation in a spin-1 ferromagnetic Bose-Einstein condensate
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DOI：
10.1103/physreva.72.023610
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发表时间：
2005-04
影响因子：
2.9
通讯作者：
H. Saito;Masahito Ueda
中科院分区：
文献类型：
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作者：
H. Saito;Masahito Ueda
受到最近涉及自旋为1的Rb玻色气体磁化的无损成像的实验的推动[J.M.Higbie等，Phys.Rev.Lett，95,050401(2005年)]，我们讨论了铁磁性玻色-爱因斯坦凝聚体的自发磁化如何在自旋守恒系统中发生的问题。由于铁磁相互作用和总自旋守恒之间的竞争，形成了各种自旋结构，如交错磁畴、螺旋和同心环结构，这取决于俘获势的几何形状。
Motivated by recent experiments involving the nondestructive imaging of magnetization of a spin-1 {sup 87}Rb Bose gas [J. M. Higbie et al., Phys. Rev. Lett., 95, 050401 (2005)], we address the question of how the spontaneous magnetization of a ferromagnetic Bose-Einstein condensate occurs in a spin-conserving system. Due to competition between the ferromagnetic interaction and the total spin conservation, various spin structures such as staggered magnetic domains and helical and concentric ring structures are formed, depending on the geometry of the trapping potential.