Coupled Ferromagnetic and Nematic Ordering of Fermions in an Optical   Flux Lattice
  Ultracold atoms in Raman-dressed optical lattices allow for effective momentum-dependent interactions among single-species fermions originating from short-range s-wave interactions. These dressed-state interactions combined with very flat bands encountered in the recently introduced optical flux lattices push the Stoner instability towards weaker repulsive interactions, making it accessible with current experiments. As a consequence of the coupling between spin and orbital degrees of freedom, the magnetic phase features Ising nematic order. 
Stefan K. Baur, Nigel R. Cooper
cond-mat.quant-gas