Vortex-core structure in a mixture of Bose and Fermi superfluids

Abstract

We study a single quantized vortex in the fermionic component of a mixture of Fermi superfluid and Bose-Einstein condensate. As the density ratio between the boson and the fermion components is tuned, we identify a transition in the vortex-core structure, across which fermions in the vortex core become completely depleted even in the weak-coupling Bardeen-Cooper-Schrieffer regime. This is accompanied by changes in key properties of the vortex state, as well as by the localization of the Bose-Einstein condensate in the vortex core. The transition in the vortex-core structure can be experimentally probed in Bose-Fermi superfluid mixtures by detecting the size and visibility of the vortices.

arXiv comment7 pages + 6 figures

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Cited by in corpus (3)

• Magnetic defects in an unbalanced mixture of two Bose-Einstein condensates
• Chiral Majorana edge states in the vortex core of a $p+ip$ Fermi superfluid
• Vortex-lattice structures in rotating Bose-Fermi superfluid mixtures