论文标题
自旋轨道耦合自旋-1玻色 - 因施泰因冷凝水在存在下的障碍物上流过一个障碍物
Spin-orbit coupled spin-1 Bose-Einstein condensate flow past an obstacle in the presence of a Zeeman field
论文作者
论文摘要
我们研究了RASHBA自旋轨道耦合的自旋1铁磁玻璃棒玻璃体凝结物在线性Zeeman磁场（ZF）下被移动障碍物打扰的动力学。分析了在不同情况下的Bogoliubov激发光谱和相应的临界激发。已经研究了移动障碍物产生的无芯漩涡或抗vortex的结构。当沿X方向应用ZF时，可以将A（AN）涡流（抗Vortex）的三个组件的涡流芯排列到垂直线中，并且随着自旋轨道耦合的增加，它们的顺序将被逆转。当ZF与Z方向平行时，即使是静态障碍物也可以诱导天空状的涡流状态。如果障碍物以相对较小的速度移动，也发现这种拓扑结构在动态上稳定。
We study the dynamics of a Rashba spin-orbit coupled spin-1 ferromagnetic Bose-Einstein condensate under a linear Zeeman magnetic field(ZF) disturbed by a moving obstacle. The Bogoliubov excitation spectrums and corresponding critical excitations in different situations are analyzed. The structure of the coreless vortex or antivortex generated by the moving obstacle has been investigated. When the ZF is applied along x direction, the vortex cores for the three components of a(an) vortex(antivortex) could be arranged into a vertical line, and their order would be reversed as the spin-orbit coupling increases. When the ZF is parallel to z direction, a skyrmion-like vortex ground state could be induced even by a static obstacle. This topological structure is also found to be dynamically stable if the obstacle is moving at a relatively small velocity.
