Topological defects of dipolar bose-einstein condensates with dresselhaus spin-orbit coupling in an anharmonic trap

被引:0
|
作者
Yang, Hui [1 ]
Gao, Yan [1 ]
Yu, Bo [1 ]
Zhang, Jinhua [1 ]
机构
[1] Xinzhou Teachers Univ, Dept Phys, Xinzhou, Peoples R China
关键词
Bose-Einstein condensates; Dresselhaus spin-orbit coupling; dipole-dipole interaction; vortex; skyrmion;
D O I
10.3389/fphy.2022.1022811
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider the topological defects and spin structures of binary Bose-Einstein condensates (BECs) with Dresselhaus spin-orbit coupling (D-SOC) and dipole-dipole interaction (DDI) in an anharmonic trap. The combined effects of D-SOC, DDI and anharmonic trap on the ground-state phases of the system are analyzed. Our results show various structural phase transitions can be achieved by adjusting the magnitudes of the D-SOC and DDI. Meantime, a ground-state phase diagram is given as a function of the D-SOC and DDI strengths. In addition, we find that tuning the D-SOC and the DDI can derive novel rich topological configurations, including ghost vortex, half-quantum vortex, skyrmion pair, vertical skyrmion string and horizontal skyrmion string.
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页数:9
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