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

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Article number075301
<mark>Journal publication date</mark>19/02/2014
<mark>Journal</mark>Physical review letters
Issue number7
Volume112
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We show that conservation of longitudinal magnetization in a spinor condensate provides a stabilizing mechanism for a coreless vortex phase-imprinted on a polar condensate. The stable vortex can form a composite topological defect with distinct small- and large-distance topology: the inner ferromagnetic coreless vortex continuously deforms toward an outer singular, singly quantized polar vortex. A similar mechanism can also stabilize a nonsingular nematic texture in the polar phase. A weak magnetization is shown to destabilize a coreless vortex in the ferromagnetic phase.