Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices
Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices
We investigate a cold-atom mixture of spinless bosons and fermions in two-dimensional optical lattices. In the presence of a nested Fermi surface, the bosons may develop a fascinating supersolid behavior characterized by a finite superfluid density as well as a spatial density wave order. Focusing on the triangular lattice geometry …