Energetic stability of coreless vortices in spin-1 Bose-Einstein condensates with conserved magnetization.

Stability and internal structure of vortices in spin-1 Bose-Einstein condensates with conserved magnetization

We demonstrate how conservation of longitudinal magnetization can have pronounced effects on both stability and structure of vortices in the atomic spin-1 Bose-Einstein condensate by providing a systematic characterization of nonsingular and singular vortex states. Constructing spinor wave functions for vortex states that continuously connect ferromagnetic and polar phases, we systematically de...

Stability of coreless vortices in ferromagnetic spinor Bose-Einstein condensates

Coreless vortex formation in a spinor Bose-Einstein condensate.

Coreless vortices were phase imprinted in a spinor Bose-Einstein condensate. The three-component order parameter of F=1 sodium condensates held in a Ioffe-Pritchard magnetic trap was manipulated by adiabatically reducing the magnetic bias field along the trap axis to zero. This distributed the condensate population across its three spin states and created a spin texture. Each spin state acquire...

Spinor Bose Condensates in Optical Traps

In an optical trap, the ground state of spin-1 Bosons such as 23Na, 39K, and 87Rb can be either a ferromagnetic or a “polar” state, depending on the scattering lengths in different angular momentum channel. The collective modes of these states have very different spin character and spatial distributions. While ordinary vortices are stable in the polar state, only those with unit circulation are...

Vortex-splitting and phase-separating instabilities of coreless vortices in F=1 spinor Bose-Einstein condensates