Spin-Nematic Vortex States in Cold Atoms

Abstract

The (pseudo-)spin degrees of freedom greatly enriches the physics of cold atoms. This is particularly so for systems with high spins (i.e., spin quantum number larger than 1/2). For example, one can construct not only the rank-1 spin vector, but also the rank-2 spin tensor in high spin systems. Here we propose a simple scheme to couple the spin tensor and the center-of-mass orbital angular momentum in a spin-1 cold atom system, and show that this leads to a new quantum phase of the matter: the spin-nematic vortex state that features vorticity in an SU(2) spin-nematic tensor subspace. Under proper conditions, such states are characterized by quantized topological numbers. Our work opens up new avenues of research in topological quantum matter with high spins.

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Cited by in corpus (10)

• Spinor-Induced Instability of Kinks, Holes and Quantum Droplets
• Generating Giant Vortex in a Fermi Superfluid via Spin-Orbital-Angular-Momentum Coupling
• Angular topological superfluid and topological vortex in an ultracold Fermi gas
• Molecular state in a spin-orbital-angular-momentum coupled Fermi gas
• Sinusoidal magnetic field induced topological excitations in a spin-orbit coupled spinor condensate
• Orbital moiré and quadrupolar triple-q physics in a triangular lattice
• Dynamical Zeeman resonance in spin-orbit-coupled spin-1 Bose gases
• Dynamic generation of superflow in a fermionic ring through phase imprinting
• Tailoring Synthetic Gauge Fields in Ultracold Atoms via Spatially Engineered Vector Beams
• Dynamically generating superflow in a bosonic ring via phase imprinting