Strongly Interacting Fermi and Bose-Fermi Gases

We present our recent progress on the study ultracold gases of $^{6}$Li and $^{23}$Na near homonuclear and heteronuclear Feshbach resonances. We discuss new experimental and theoretical developments on itinerant ferromagnetism in a Fermi gas of ultracold atoms [1]. We also report on ultracold gases of $^{6}$Li and $^{23}$Na, including fermionic LiNa molecules. \\[4pt] [1] G.-B. Jo, Y.-R. Lee, J.-H. Choi, C.A. Christensen, T.H. Kim, J.H. Thywissen, D.E. Pritchard, and W. Ketterle, Observation of itinerant ferromagnetism in a strongly interacting Fermi gas of ultracold atoms, Science 325, 1521 (2009).