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arXiv · 2303.02087

Self-bound crystals of antiparallel dipolar mixtures

Maria Arazo·Albert Gallemí·Montserrat Guilleumas·Ricardo Mayol·Luis Santos
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Abstract

Recent experiments have created supersolids of dipolar quantum droplets. The resulting crystals lack, however, a genuine cohesive energy and are maintained by the presence of an external confinement, bearing a resemblance to the case of ion Coulomb crystals. We show that a mixture of two antiparallel dipolar condensates allows for the creation of potentially large, self-bound crystals which, resembling ionic crystals in solid-state physics, are maintained by the mutual dipolar attraction between the components, with no need of transversal confinement. This opens intriguing novel possibilities, including three-dimensionally self-bound droplet-ring structures, stripe/labyrinthic patterns, and self-bound crystals of droplets surrounded by an interstitial superfluid, resembling the case of superfluid Helium in porous media.

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Maria Arazo, Albert Gallemí, Montserrat Guilleumas, Ricardo Mayol, Luis Santos. 2023-03-03. Self-bound crystals of antiparallel dipolar mixtures. https://doi.org/10.1103/physrevresearch.5.043038

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