Nucleation of spontaneous vortices in trapped Fermi gases undergoing a BCS-BEC crossover

A. Glatz, H. L.L. Roberts, I. S. Aranson, K. Levin

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number180501
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number18
DOIs
StatePublished - Nov 1 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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