激子在陷阱中的凝聚。
Condensation of excitons in a trap.
机构信息
Department of Physics, University of California at San Diego, La Jolla, California 92093-0319, USA.
出版信息
Nano Lett. 2012 May 9;12(5):2605-9. doi: 10.1021/nl300983n. Epub 2012 Apr 19.
PMID:22509898
Abstract
Condensation is observed in a gas of indirect excitons confined in an electrostatic trap. Imaging and interferometric measurements detect that excitons condense at the trap bottom and exciton spontaneous coherence emerges with lowering temperature. Below a temperature of about 1 K, the direct signature of Bose-Einstein condensation, the extension of coherence over the entire cloud, is observed.
摘要
在静电陷阱中限制的间接激子气体中观察到了凝聚。成像和干涉测量检测到激子在陷阱底部凝聚，并且随着温度降低，激子自发相干出现。在约 1 K 的温度以下，观察到了玻色-爱因斯坦凝聚的直接特征，即相干性扩展到整个云团。
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