Vortex structures of rotating spin-orbit coupled Bose-Einstein condensates

Details Vortex structures of rotating spin-orbit coupled Bose-Einstein condensates Vortex structures of rotating spin-orbit coupled Bose-Einstein condensates

2011-08-05

arxiv.org/abs/1108.1238v4

Phys. Rev. A 84, 063624 (2011)

Physics

Condensed Matter

Quantum Gases

8 pages, 7 figures, two figures are added

Scientific paper

10.1103/PhysRevA.84.063624

We consider the quasi-2D two-component Bose-Einstein condensates with Rashba spin-orbit (SO) coupling in a rotating trap. An external Zeeman term favoring spin polarization along the radial direction is also considered, which has the same form as the non-canonical part of the mechanical angular momentum. The rotating condensate exhibits rich structures as varying the strengths of trapping potential and interaction. With a strong trapping potential, the condensate exhibits a half-quantum vortex-lattice configuration. Such a configuration is driven to the normal one by introducing the external radial Zeeman field. In the case of a weak trap potential, the condensate exhibits a multi-domain pattern of plane-wave states under the external radial Zeeman field.

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