TY - JOUR
T1 - Motion of a solitonic vortex in the BEC-BCS crossover
AU - Ku, Mark J.H.
AU - Ji, Wenjie
AU - Mukherjee, Biswaroop
AU - Guardado-Sanchez, Elmer
AU - Cheuk, Lawrence W.
AU - Yefsah, Tarik
AU - Zwierlein, Martin W.
PY - 2014/8/4
Y1 - 2014/8/4
N2 - We observe a long-lived solitary wave in a superfluid Fermi gas of Li6 atoms after phase imprinting. Tomographic imaging reveals the excitation to be a solitonic vortex, oriented transverse to the long axis of the cigar-shaped atom cloud. The precessional motion of the vortex is directly observed, and its period is measured as a function of the chemical potential in the BEC-BCS crossover. The long period and the correspondingly large ratio of the inertial to the bare mass of the vortex are in good agreement with estimates based on superfluid hydrodynamics that we derive here using the known equation of state in the BEC-BCS crossover.
AB - We observe a long-lived solitary wave in a superfluid Fermi gas of Li6 atoms after phase imprinting. Tomographic imaging reveals the excitation to be a solitonic vortex, oriented transverse to the long axis of the cigar-shaped atom cloud. The precessional motion of the vortex is directly observed, and its period is measured as a function of the chemical potential in the BEC-BCS crossover. The long period and the correspondingly large ratio of the inertial to the bare mass of the vortex are in good agreement with estimates based on superfluid hydrodynamics that we derive here using the known equation of state in the BEC-BCS crossover.
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U2 - 10.1103/PhysRevLett.113.065301
DO - 10.1103/PhysRevLett.113.065301
M3 - Article
C2 - 25148332
AN - SCOPUS:84905641840
SN - 0031-9007
VL - 113
JO - Physical review letters
JF - Physical review letters
IS - 6
M1 - 065301
ER -