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arXiv · 1406.6890

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

M. Iskin
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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.

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M. Iskin. 2015-01-06. Stripe-ordered superfluid and supersolid phases in attractive Hofstadter-Hubbard model. https://doi.org/10.1103/physreva.91.011601

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