Helical spin textures in dipolar Bose-Einstein condensates

Details Helical spin textures in dipolar Bose-Einstein condensates Helical spin textures in dipolar Bose-Einstein condensates

2010-09-13

arxiv.org/abs/1009.2372v3

Physical Review A 82, 053616 (2010)

Physics

Condensed Matter

Quantum Gases

7 pages, 6 figures

Scientific paper

10.1103/PhysRevA.82.053616

We numerically study elongated helical spin textures in ferromagnetic spin-1 Bose-Einstein condensates subject to dipolar interparticle forces. Stationary states of the Gross-Pitaevskii equation are solved and analyzed for various values of the helical wave vector and dipolar coupling strength. We find two helical spin textures which differ by the nature of their topological defects. The spin structure hosting a pair of Mermin-Ho vortices with opposite mass flows and aligned spin currents is stabilized for a nonzero value of the helical wave vector.

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