# 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
}
}
• H. Takeuchi
• Published 8 September 2020
• Physics
• Physical review letters
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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