Microscopic Structure of a Vortex Line in a Dilute Superfluid Fermi Gas

N. Nygaard, G. M. Bruun, C. W. Clark, and D. L. Feder

Phys. Rev. Lett. 90, 210402 – Published 30 May 2003

Abstract

The microscopic properties of a single vortex in a dilute superfluid Fermi gas at zero temperature are examined within the framework of self-consistent Bogoliubov–de Gennes theory. Using only physical parameters as input, we study the pair potential, the density, the energy, and the current distribution. Comparison of the numerical results with analytical expressions clearly indicates that the energy of the vortex is governed by the zero-temperature BCS coherence length.

Received 22 October 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.210402

Authors & Affiliations

N. Nygaard^1,2, G. M. Bruun³, C. W. Clark¹, and D. L. Feder⁴

¹Electron and Optical Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8410, USA
²Chemical Physics Program, University of Maryland, College Park, Maryland 20742, USA
³Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen, Denmark
⁴Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada T2N 1N4

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Vol. 90, Iss. 21 — 30 May 2003

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