Phys. Rev. Lett. 97, 240402 (2006) [4 pages]
Observation of Vortex Pinning in Bose-Einstein Condensates
Abstract
References (23)
Citing Articles
S. Tung, V. Schweikhard, and E. A. CornellJILA, National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA
Received 10 July 2006; published 12 December 2006
We report the observation of vortex pinning in rotating gaseous Bose-Einstein condensates. Vortices are pinned to columnar pinning sites created by a corotating optical lattice superimposed on the rotating Bose-Einstein condensates. We study the effects of two types of optical lattice: triangular and square. In both geometries we see an orientation locking between the vortex and the optical lattices. At sufficient intensity the square optical lattice induces a structural crossover in the vortex lattice.
©2006 The American Physical Society
| URL: |
http://link.aps.org/doi/10.1103/PhysRevLett.97.240402
|
| DOI: |
10.1103/PhysRevLett.97.240402 |
| PACS: |
03.75.Lm;
74.25.Qt
|
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