Observation of vortex lattices in Bose-Einstein condensates |
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| Authors: | Abo-Shaeer J R Raman C Vogels J M Ketterle W |
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| Institution: | Department of Physics, Center for Ultracold Atoms at Massachusetts Institute of Technology (MIT) and Harvard University, and Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA. |
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| Abstract: | Quantized vortices play a key role in superfluidity and superconductivity. We have observed the formation of highly ordered vortex lattices in a rotating Bose-condensed gas. These triangular lattices contained over 100 vortices with lifetimes of several seconds. Individual vortices persisted up to 40 seconds. The lattices could be generated over a wide range of rotation frequencies and trap geometries, shedding light on the formation process. Our observation of dislocations, irregular structure, and dynamics indicates that gaseous Bose-Einstein condensates may be a model system for the study of vortex matter. |
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