中国物理B ›› 2020, Vol. 29 ›› Issue (10): 100304-.doi: 10.1088/1674-1056/abab72

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Ji-Guo Wang(王继国)1,2,†(), Yue-Qing Li(李月晴)1,2, Yu-Fei Dong(董雨菲)1,2   

  • 收稿日期:2020-04-06 修回日期:2020-07-02 接受日期:2020-08-01 出版日期:2020-10-05 发布日期:2020-10-05
  • 通讯作者: Ji-Guo Wang(王继国)

Lattice configurations in spin-1 Bose–Einstein condensates with the SU(3) spin–orbit coupling

Ji-Guo Wang(王继国)1,2,†, Yue-Qing Li(李月晴)1,2, and Yu-Fei Dong(董雨菲)1,2   

  1. 1 Department of Mathematics and Physics, Shijiazhuang TieDao University, Shijiazhuang 050043, China
    2 Institute of Applied Physics, Shijiazhuang TieDao University, Shijiazhuang 050043, China
  • Received:2020-04-06 Revised:2020-07-02 Accepted:2020-08-01 Online:2020-10-05 Published:2020-10-05
  • Contact: Corresponding author. E-mail: wangjiguo@stdu.edu.cn
  • About author:
    †Corresponding author. E-mail: wangjiguo@stdu.edu.cn
    * Project supported by the National Natural Science Foundation of China (Grant No. 11904242) and the Natural Science Foundation of Hebei Province, China (Grant No. A2019210280).

Abstract:

We consider the SU(3) spin–orbit coupled spin-1 Bose–Einstein condensates in a two-dimensional harmonic trap. The competition between the SU(3) spin–orbit coupling and the spin-exchange interaction results in a rich variety of lattice configurations. The ground-state phase diagram spanned by the isotropic SU(3) spin–orbit coupling and the spin–spin interaction is presented. Five ground-state phases can be identified on the phase diagram, including the plane wave phase, the stripe phase, the kagome lattice phase, the stripe-honeycomb lattice phase, and the honeycomb hexagonal lattice phase. The system undergoes a sequence of phase transitions from the rectangular lattice phase to the honeycomb hexagonal lattice phase, and to the triangular lattice phase in spin-1 Bose–Einstein condensates with anisotrpic SU(3) spin–orbit coupling.

Key words: Bose-Einstein condensates, lattice configurations, SU(3) spin-orbit coupling

中图分类号:  (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

  • 03.75.Lm
03.75.Mn (Multicomponent condensates; spinor condensates) 67.85.Hj (Bose-Einstein condensates in optical potentials) 67.80.K- (Other supersolids)