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Ring phases of spin-orbit coupled Bose-Einstein condensate in the radial optical lattices

  • Ji-Guo WangEmail author
  • Wei Wang
  • Xiao-Dong Bai
  • Shi-Jie Yang
Regular Article
  • 17 Downloads

Abstract.

We study the ground-state phases of two-dimensional spin-orbit coupled Bose-Einstein condensate loaded in the spin-dependent radial optical lattices. For strong depth of the spin-dependent radial optical lattice, three new types of the ring phases are found with isotropic spin-orbit coupling, i.e., the ring-stripe phase with the periodic density modulation along the radial direction, the ring-supersolid phase with the periodic density modulation both the radial and azimuthal directions and the windmill-supersolid phase with four vanes along the azimuthal direction. By increasing spin-orbit coupling, the system undergoes a sequence phase transitions from the ring-stripe phase to the ring-sueprsolid phase, and to the windmill-supersolid phase for the weak depth of radial optical lattice, however, the ring-stripe phase transforms to the windmill-supersolid phase directly for the strong depth of radial optical lattice. We also discuss the ground-state phases with anisotropic spin-orbit coupling, two-component Bose-Einstein condensates are easier condensed along the direction with larger spin-orbit coupling.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ji-Guo Wang
    • 1
    • 2
    Email author
  • Wei Wang
    • 1
    • 2
  • Xiao-Dong Bai
    • 3
  • Shi-Jie Yang
    • 4
  1. 1.Department of Mathematics and PhysicsShijiazhuang TieDao UniversityShijiazhuangChina
  2. 2.Institute of Applied PhysicsShijiazhuang TieDao UniversityShijiazhuangChina
  3. 3.CAS Key Laboratory of Theoretical Physics, Institute of Theoretical PhysicsChinese Academy of SciencesBeijingChina
  4. 4.Department of PhysicsBeijing Normal UniversityBeijingChina

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