Quantum Electronics and Laser Science ConferenceCollective Excitation Modes in the BEC-BCS CrossoverRudolf GrimmPublished May 6, 2007• 0 citationsOpenAlexAbstractWe report on recent developments in our experiments on ultracold Fermi gases. This includes measurements of collective modes in the BEC-BCS crossover in 6Li, and first experiments on a Fermi-Fermi mixture of 6Li and 40K.