Superfluidity of pure spin current in ultracold Bose gases
arXiv:1501.01362 · doi:10.1103/PhysRevA.91.023633
Abstract
We study the superfluidity of a pure spin current that is a spin current without mass current. We examine two types of pure spin currents, planar and circular, in spin-1 Bose gas. For the planar current, it is usually unstable, but can be stabilized by the quadratic Zeeman effect. The circular current can be generated with spin-orbit coupling. When the spin-orbit coupling strength is weak, we find that the circular pure spin current is the ground state of the system and thus a super-flow. We discuss the experimental schemes to realize and detect a pure spin current.
5 pages, 2 figures
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Cited by in corpus (10)
- Critical spin superflow in a spinor Bose-Einstein condensate
- Spin-Current Instability at a Magnetic Domain Wall in a Ferromagnetic Superfluid: a Generation Mechanism of Eccentric Fractional Skyrmions
- Superfluidity of Bose-Einstein condensates in ultracold atomic gases
- Spin-flip reflection at the normal metal-spin superconductor interface
- Analytical results for the superflow of spin-orbit-coupled Bose-Einstein condensates in optical lattices
- Metastable supersolid in spin-orbit coupled Bose-Einstein condensates
- Properties of a nematic spin vortex in an antiferromagnetic spin-1 Bose-Einstein condensate
- Ginzburg-Landau-type theory of non-polarized spin superconductivity
- Stability of supercurrents in a superfluid phase of spin-1 bosons in an optical lattice
- Geometric phase driven Josephson junction: Possible experimental scheme for the search of spin superfluidity