Spin-orbit-coupled spin-1 Bose-Einstein condensates confined in radially periodic potential

• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: GENERAL
• 页码范围: 179-187
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/abc53e

摘要

We investigate the ground states of spin-1 Bose-Einstein condensates(BECs)with spin-orbit coupling in a radially periodic potential by numerically solving the coupled Gross-Pitaevskii equations.In the radially periodic potential,we first demonstrate that spin-orbit-coupled antiferromagnetic BECs support a multiring petal phase.Polar-core vortex can be observed from phase profiles,which is manifested as circularly symmetric distribution.We further show that spin-orbit coupling can induce multiring soliton structure in ferromagnetic BECs.It is confirmed especially that the wave-function phase of the ring corresponding to uniform distribution satisfies the rotational symmetry,and the wave-function phase of the ring corresponding to partial splitting breaks the rotational symmetry.Adjusting the spin-orbit coupling strength can control the number of petal in antiferromagnetic BECs and the winding numbers of wave-function in ferromagnetic BECs.Finally,we discuss effects of spin-independent and spin-dependent interactions on the ground states.