title: Condensation of excitons in a trap.
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.
authors.affiliation: Department of Physics, University of California at San Diego, La Jolla, California 92093-0319, USA. alex.high@gmail.com
authors.forename: A A
authors.initials: AA
authors.lastname: High
authors.forename: J R
authors.initials: JR
authors.lastname: Leonard
authors.forename: M
authors.initials: M
authors.lastname: Remeika
authors.forename: L V
authors.initials: LV
authors.lastname: Butov
authors.forename: M
authors.initials: M
authors.lastname: Hanson
authors.forename: A C
authors.initials: AC
authors.lastname: Gossard