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  • Letter
  • Open Access

Quantum droplets with magnetic vortices in spinor dipolar Bose-Einstein condensates

Shaoxiong Li and Hiroki Saito*

  • *Contact author: hiroki.saito@uec.ac.jp
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Phys. Rev. Research 6, L042049 – Published 25 November, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L042049

Abstract

Motivated by the recent experimental realization of a Bose-Einstein condensate (BEC) of europium atoms, we investigate the self-bound droplet state for a dipolar BEC with spin degrees of freedom. Under a sufficiently weak magnetic field, the droplet has a torus shape with circulating spin vectors, which is referred to as a magnetic vortex. The ground state transforms from a torus to a cigar shape through bistability with increasing magnetic field. Dynamical change of the magnetic field causes the torus to rotate due to the Einstein–de Haas effect. The magnetic vortices form a supersolid in a confined system.

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Phys. Rev. Research 6, L042049– Published 25 November, 2024
  • Received 29 February 2024
  • Revised 26 July 2024
  • Accepted 23 October 2024
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