Stripe-ordered superfluid and supersolid phases in attractive   Hofstadter-Hubbard model
  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. 
M. Iskin
cond-mat.quant-gas cond-mat.str-el cond-mat.supr-con