Observation of vortex lattices in Bose-Einstein condensates
Observation of vortex lattices in Bose-Einstein condensates
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DOI：
10.1126/science.1060182
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发表时间：
2001-04-20
期刊：
影响因子：
56.9
通讯作者：
Ketterle, W
中科院分区：
文献类型：
--
作者：
Abo-Shaeer, JR;Raman, C;Ketterle, W
量子化涡旋在超流性和超导电性中起着关键作用。我们观察到在旋转玻色凝聚气体中高度有序涡旋晶格的形成。这些三角形晶格包含超过100个生命周期为几秒的漩涡。个别漩涡持续长达40秒。晶格可以在广泛的旋转频率和陷阱几何形状范围内产生，从而揭示形成过程。我们对位错、不规则结构和动力学的观察表明，气态玻色-爱因斯坦凝聚体可能是研究涡旋物质的模型系统。
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.