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

Energetic stability of coreless vortices in Spin-1 Bose-Einstein condensates with conserved magnetization
Energetic stability of coreless vortices in Spin-1 Bose-Einstein condensates with conserved magnetization
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.
bose-einstein condensates, spinor condensates, topological defects
1-6
Lovegrove, Justin
ee869a91-6a89-4000-9d71-93ca8626c6ea
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Lovegrove, Justin
ee869a91-6a89-4000-9d71-93ca8626c6ea
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Lovegrove, Justin, Borgh, Magnus O. and Ruostekoski, Janne (2014) Energetic stability of coreless vortices in Spin-1 Bose-Einstein condensates with conserved magnetization. Physical Review Letters, 112 (7), 1-6. (doi:10.1103/PhysRevLett.112.075301).

Record type: Article

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.

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e-pub ahead of print date: 19 June 2013
Published date: 19 February 2014
Keywords: bose-einstein condensates, spinor condensates, topological defects
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 362541
URI: http://eprints.soton.ac.uk/id/eprint/362541
PURE UUID: 0f121050-062c-4084-9a31-136c56eeabb0

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Date deposited: 26 Feb 2014 13:21
Last modified: 20 Nov 2021 16:43

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Contributors

Author: Justin Lovegrove
Author: Magnus O. Borgh

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