Pinning of Vortices in a Bose-Einstein Condensate by an Optical Lattice

J. W. Reijnders and R. A. Duine

Phys. Rev. Lett. 93, 060401 – Published 4 August 2004

Abstract

We consider the ground state of vortices in a Bose-Einstein condensate. We show that turning on a weak optical periodic potential leads to a transition from the triangular Abrikosov vortex lattice to phases where the vortices are pinned by the optical potential. We discuss the phase diagram of the system for a two-dimensional optical periodic potential with one vortex per optical lattice cell. We also discuss the influence of a one-dimensional optical periodic potential on the vortex ground state. The latter situation has no analog in other condensed-matter systems.

Received 28 January 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.060401

Authors & Affiliations

J. W. Reijnders^1,* and R. A. Duine^2,3,†

¹Institute for Theoretical Physics, University of Amsterdam, Valkenierstraat 65, 1018 XE Amsterdam, The Netherlands
²Department of Physics, The University of Texas at Austin, 1 University Station C1600, Austin, Texas 78712-0264, USA
³Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands

^*Electronic address: jwr@science.uva.nl
^†Electronic address: duine@physics.utexas.edu

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Vol. 93, Iss. 6 — 6 August 2004

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