# Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate.

@article{Takeuchi2020QuantumEV, title={Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate.}, author={Hiromitsu Takeuchi}, journal={Physical review letters}, year={2020}, volume={126 19}, pages={ 195302 } }

We find a novel topological defect in a spin-nematic superfluid theoretically. A quantized vortex spontaneously breaks its axisymmetry, leading to an elliptic vortex in nematic-spin Bose-Einstein condensates with small positive quadratic Zeeman effect. The new vortex is considered the Joukowski transform of a conventional vortex. Its oblateness grows when the Zeeman length exceeds the spin healing length. This structure is sustained by balancing the hydrodynamic potential and the elasticity of…

## 11 Citations

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