Vortex-Lattice Dynamics in Rotating Spinor Bose-Einstein Condensates

V. Schweikhard, I. Coddington, P. Engels, S. Tung, and and E. A. Cornell
Phys. Rev. Lett. 93, 210403 – Published 17 November 2004

Abstract

We observe interlaced square vortex lattices in rotating dilute-gas spinor Bose-Einstein condensates (BEC). After preparing a hexagonal vortex lattice in a one-component BEC in an internal atomic state |1, we coherently transfer a fraction of the superfluid to a different state |2. The subsequent evolution of this pseudo-spin-1/2 superfluid towards a state of offset square lattices involves an intriguing interplay of phase-separation and -mixing dynamics, both macroscopically and on the length scale of the vortex cores, and a stage of vortex turbulence. The stability of the square structure is proved by its response to applied shear perturbations. An interference technique shows the spatial offset between the two vortex lattices. Vortex cores in either component are filled by fluid of the other component, such that the spin-1/2 order parameter forms a Skyrmion lattice.

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  • Received 5 October 2004
  • Publisher error corrected 18 November 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.210403

©2004 American Physical Society

Corrections

18 November 2004

Erratum

Publisher's Note: Vortex-Lattice Dynamics in Rotating Spinor Bose-Einstein Condensates [Phys. Rev. Lett. 93, 210403 (2004)]

V. Schweikhard, I. Coddington, P. Engels, S. Tung, and E. A. Cornell
Phys. Rev. Lett. 93, 229901 (2004)

Authors & Affiliations

V. Schweikhard, I. Coddington, P. Engels, S. Tung, and and E. A. Cornell*

  • JILA, National Institute of Standards and Technology and University of Colorado and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

  • *Also at Quantum Physics Division, National Institute of Standards and Technology.

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Issue

Vol. 93, Iss. 21 — 19 November 2004

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