Quantized Vortices and Four-Component Superfluidity of Semiconductor Excitons.
Phys Rev Lett
; 118(12): 127402, 2017 Mar 24.
Article
em En
| MEDLINE
| ID: mdl-28388190
ABSTRACT
We study spatially indirect excitons of GaAs quantum wells, confined in a 10 µm electrostatic trap. Below a critical temperature of about 1 K, we detect macroscopic spatial coherence and quantized vortices in the weak photoluminescence emitted from the trap. These quantum signatures are restricted to a narrow range of density, in a dilute regime. They manifest the formation of a four-component superfluid, made by a low population of optically bright excitons coherently coupled to a dominant fraction of optically dark excitons.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
França