Nucleation of spontaneous vortices in trapped Fermi gases undergoing a BCS-BEC crossover.
- Materials Science Division
We study the spontaneous formation of vortices during the superfluid condensation in a trapped fermionic gas subjected to a rapid thermal quench via evaporative cooling. Our work is based on the numerical solution of the time-dependent crossover Ginzburg-Landau equation coupled to the heat diffusion equation. We quantify the evolution of condensate density and vortex length as a function of a crossover phase parameter from BCS to BEC. The more interesting phenomena occur somewhat nearer to the BEC regime and should be experimentally observable; during the propagation of the cold front, the increase in condensate density leads to the formation of supercurrents toward the center of the condensate as well as possible condensate volume oscillations.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); NSF-MRSEC
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1030900
- Report Number(s):
- ANL/MSD/JA-69378; TRN: US201124%%526
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 18; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- ENGLISH
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