Stripe-ordered superfluid and supersolid phases in attractive Hofstadter-Hubbard model

Abstract

We use microscopic Bogoliubov-de Gennes formalism to explore the ground-state phase diagram of the single-band attractive Hofstadter-Hubbard model on a square lattice. We show that the interplay between the Hofstadter butterfly and superfluidity breaks spatial symmetry, and gives rise to stripe-ordered superfluid and supersolid phases in large parameter spaces. We also discuss the effects of a trapping potential and comment on the viability of observing stripe-ordered phases with cold Fermi gases.

4+ pages with 3 figures; to appear in PRA as RC

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• Dislocations and vortices in pair density wave superconductors
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Cited by in corpus (4)

• Anyon Superconductivity from Topological Criticality in a Hofstadter-Hubbard Model
• Unconventional Self-Similar Hofstadter Superconductivity from Repulsive Interactions
• Attractive Hofstadter-Hubbard model with imbalanced chemical and vector potentials
• Theory of Hofstadter Superconductors