Superfluid and Fermi liquid phases of Bose-Fermi mixtures in optical lattices

Abstract

We describe interacting mixtures of ultracold bosonic and fermionic atoms in harmonically confined optical lattices. For a suitable choice of parameters we study the emergence of superfluid and Fermi liquid (non-insulating) regions out of Bose-Mott and Fermi-band insulators, due to finite Boson and Fermion hopping. We obtain the shell structure for the system and show that angular momentum can be transferred to the non-insulating regions from Laguerre-Gaussian beams, which combined with Bragg spectroscopy can reveal all superfluid and Fermi liquid shells.

4 pages, 2 figures

References in corpus (6)

• Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
• Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• Inhomogeneous atomic Bose-Fermi mixtures in cubic lattices
• Bragg Spectroscopy of Vortex Lattices in Bose-Einstein condensates
• Mott insulators and correlated superfluids in ultracold Bose-Fermi mixtures