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Spin-orbit coupling induced separation and hidden spin textures in spin-1 Bose-Einstein condensates
Atomic Physics · Submitted 28 Aug 2012
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim When the spin-orbit coupling strength $\kappa$ is comparable with that of the trapping potential, the density distribution centers of different components of the spinor condensate deviate evidently from the trap center in the plane wave and stripe phases.
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We analytically and numerically investigate the ground state of the spin-orbit coupled spin-1 Bose-Einstein condensates in an external parabolic potential. When the spin-orbit coupling strength $\kappa$ is comparable with that of the trapping potential, the density distribution centers of different components of the spinor condensate deviate evidently from the trap center in the plane wave and stripe phases. When $\kappa\gg1$, the magnitude of this deviation decreases as $\kappa$ is getting larger and larger. Correspondingly, periphery half-skyrmions textures arise. This deviation can be reflected by the non-uniform magnetic moment in the $z$ direction, $\mathcal{F}_z$. With the manipulation of the external trap, the local magnitude of $\mathcal{F}_z$ can be increased evidently. This kind of increase of $\mathcal{F}_z$ is also observed in the square vortex lattice phase of the condensate.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We analytically and numerically investigate the ground state of the spin-orbit coupled spin-1 Bose-Einstein condensates in an external parabolic potential. | contribution 0.98 | 0.95 | 0.05 | asserted 0.90 |
| s1 | When the spin-orbit coupling strength $\kappa$ is comparable with that of the trapping potential, the density distribution centers of different components of the spinor condensate deviate evidently from the trap center in the plane wave and stripe phases. | result 1.00 | 0.89 | 0.24 | asserted 1.00 |
| s2 | When $\kappa\gg1$, the magnitude of this deviation decreases as $\kappa$ is getting larger and larger. | result 1.00 | 0.88 | 0.10 | asserted 1.00 |
| s3 | Correspondingly, periphery half-skyrmions textures arise. | result 0.98 | 0.84 | 0.17 | asserted 1.00 |
| s4 | This deviation can be reflected by the non-uniform magnetic moment in the $z$ direction, $\mathcal{F}_z$. | interpretation 0.78 | 0.80 | 0.11 | asserted 0.92 |
| s5 | With the manipulation of the external trap, the local magnitude of $\mathcal{F}_z$ can be increased evidently. | result 0.95 | 0.82 | 0.10 | asserted 0.96 |
| s6 | This kind of increase of $\mathcal{F}_z$ is also observed in the square vortex lattice phase of the condensate. | result 1.00 | 0.85 | 0.09 | asserted 1.00 |
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Original abstract
We analytically and numerically investigate the ground state of the spin-orbit coupled spin-1 Bose-Einstein condensates in an external parabolic potential. When the spin-orbit coupling strength $\kappa$ is comparable with that of the trapping potential, the density distribution centers of different components of the spinor condensate deviate evidently from the trap center in the plane wave and stripe phases. When $\kappa\gg1$, the magnitude of this deviation decreases as $\kappa$ is getting larger and larger. Correspondingly, periphery half-skyrmions textures arise. This deviation can be reflected by the non-uniform magnetic moment in the $z$ direction, $\mathcal{F}_z$. With the manipulation of the external trap, the local magnitude of $\mathcal{F}_z$ can be increased evidently. This kind of increase of $\mathcal{F}_z$ is also observed in the square vortex lattice phase of the condensate.
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