Spin Josephson vortices in two tunnel coupled spinor Bose gases

Abstract

We study topological excitations in spin-1 Bose-Einstein condensates trapped in an elongated double-well optical potential. This system hosts a new topological defect, the spin Josephson vortex (SJV), which forms due to the competition between the inter-well atomic tunneling and short-range ferromagnetic two-body interaction. We identify the spin structure and formation dynamics of the SJV and determine the phase diagram of the system. By exploiting the intrinsic stability of the SJV, we propose a dynamical method to create SJVs under realistic experimental conditions.

5 pages including references, 3 figures

References in corpus (10)

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Cited by in corpus (10)

• Quasiparticles of widely tuneable inertial mass: The dispersion relation of atomic Josephson vortices and related solitary waves
• Superfluidity of pure spin current in ultracold Bose gases
• Generation of Josephson vortices in stacked toroidal Bose-Einstein condensates
• Superfluidity of Bose-Einstein condensates in ultracold atomic gases
• Nonlinear standing waves in an array of coherently coupled Bose-Einstein condensates
• Transverse Josephson vortices and localized states in stacked Bose-Einstein condensates
• Josephson vortices and persistent current in a double-ring supersolid system
• Unlocked-relative-phase states in arrays of Bose-Einstein condensates
• Manifold formation and crossings of ultracold lattice spinor atoms in the intermediate interaction regime
• Interaction-induced dissipative quantum phase transition in a head-to-tail atomic Josephson junction