Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.045304
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Funding
- NSF
- ARO MURI on Atomtronics
- AFOSR PECASE
- AFOSR MURI on Exotic Phases
- David and Lucile Packard Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1506019] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125846] Funding Source: National Science Foundation
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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 soliton, its subsequent snaking, and its decay into a vortex ring, which, in turn, breaks to finally leave behind a single solitonic vortex. In intermediate stages, we find evidence for an exotic structure resembling the (I) soliton, a combination of a vortex ring and a vortex line. Direct imaging of the nodal surface reveals its undulation dynamics and its decay via the puncture of the initial soliton plane. The observed evolution of the nodal surface represents dynamics beyond superfluid hydrodynamics, calling for a microscopic description of unitary fermionie superfluids out of equilibrium.
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