期刊
NANO LETTERS
卷 12, 期 5, 页码 2605-2609出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl300983n
关键词
Excitons; traps; coherence; condensation
类别
资金
- ARO [W911NF-08-1-0341]
- NSF [0907349]
- DOE [DE-FG02-07ER46449]
- U.S. Department of Energy (DOE) [DE-FG02-07ER46449] Funding Source: U.S. Department of Energy (DOE)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907349] Funding Source: National Science Foundation
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.
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