Magnetic stripe soliton and localized stripe wave in spin-1 Bose-Einstein condensates

Abstract

The recent experimental realization of spin-orbit coupling for ultracold atomic gases opens a new avenue for engineering solitons with internal spatial structures through tuning atomic band dispersions. However, the types of the resulting stripe solitons in a spin-1/2 Bose-Einstein condensate (BEC) have been limited to dark-dark or bright-bright with the same density profiles for different spins. Here we propose that general types of stripe solitons, including magnetic stripe (e.g., dark-bright) and localized stripe waves (neither bright nor dark), could be realized in a spin-1 BEC with widely tunable band dispersions through modulating the coupling between three spin states and the linear momentum of atoms. \ Surprisingly, a moving magnetic stripe soliton can possess both negative and positive effective masses at different velocities, leading to a zero mass soliton at certain velocity. Our work showcases the great potential of realizing novel types of solitons through band dispersion engineering, which may provide a new approach for exploring soliton physics in many physical branches.

6 pages, 7 figures

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Cited by in corpus (5)

• Vector rogue waves in spin-1 Bose-Einstein condensates with spin-orbit coupling
• Sinusoidal magnetic field induced topological excitations in a spin-orbit coupled spinor condensate
• Imaginary spin-orbital coupling in parity-time symmetric systems with momentum-dependent gain and loss
• Magnetization induced skyrmion dynamics of a spin-orbit-coupled spinor condensate under sinusoidally varying magnetic field
• Creating moving gap solitons in spin-orbit-coupled Bose-Einstein condensates