We observe a long-lived solitary wave in a superfluid Fermi gas of Li 6 atoms after phase
imprinting. Tomographic imaging reveals the excitation to be a solitonic vortex, oriented …

We follow the time evolution of a superfluid Fermi gas of resonantly interacting Li 6 atoms
after a phase imprint. Via tomographic imaging, we observe the formation of a planar dark …

We study, both analytically and numerically, the formation and propagation of dark solitons
in a superfluid Fermi gas in the crossover from Bardeen-Cooper-Schrieffer (BCS) superfluid …

Critical velocities have been observed in an ultracold superfluid Fermi gas throughout the
BEC-BCS crossover. A pronounced peak of the critical velocity at unitarity demonstrates that …

We study collective excitation modes of a fermionic gas of Li 6 atoms in the BEC-BCS
crossover regime. While measurements of the axial compression mode in the cigar-shaped …

We evaluate the frequencies of collective modes and the anisotropic expansion rate of a
harmonically trapped Fermi superfluid at varying coupling strengths across a Feshbach …

We have analyzed a single vortex at T= 0 in a 3D superfluid atomic Fermi gas across a
Feshbach resonance. On the BCS side, the order parameter varies on two scales: k F-1 and …

We investigate the linear and nonlinear sound propagations in a cigar-shaped superfluid
Fermi gas with a large particle number. We first solve analytically the eigenvalue problem of …

Ultracold atomic gases have proven to be remarkable model systems for exploring quantum
mechanical phenomena. Experimental work on gases of fermionic atoms in particular has …

We map out the critical velocity in the crossover from Bose-Einstein condensation to
Bardeen-Cooper-Schrieffer superfluidity with ultracold Li 6 gases. A small attractive potential …