Fragmented-condensate solid of dipolar excitons

Abstract : We discuss a possible link between the recently observed macroscopic ordering of ultracold dipolar excitons (MOES) and the phenomenon of supersolidity. In the dilute limit we predict a stable supersolid state for a quasi-one-dimensional system of bosonic dipoles characterized by two-and three-body contact repulsion. We phenomenologically extend our theory to the strongly-correlated regime and find a critical value of the contact interaction parameter at which the supersolid exhibits a quantum phase transition to a fragmented state. The wavelength of the fragmented-condensate solid is defined by the balance between the quantum pressure and the entropy due to fluctuations of the relative phases between the fragments. Our model appears to be in good agreement with the relevant experimental data, including the very recent results on commensurability effect and wavelength of the MOES.
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95 (18), pp.184519. <10.1103/PhysRevB.95.184519>
Liste complète des métadonnées


https://hal.archives-ouvertes.fr/hal-01540802
Contributeur : Bernadette Bergeret <>
Soumis le : vendredi 16 juin 2017 - 15:43:37
Dernière modification le : jeudi 27 juillet 2017 - 09:30:17

Fichier

AndreevPRB2017_Postprint.pdf
Fichiers produits par l'(les) auteur(s)

Licence


Distributed under a Creative Commons Paternité - Partage selon les Conditions Initiales 4.0 International License

Identifiants

Collections

Citation

S. V. Andreev. Fragmented-condensate solid of dipolar excitons. Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95 (18), pp.184519. <10.1103/PhysRevB.95.184519>. <hal-01540802>

Partager

Métriques

Consultations de
la notice

89

Téléchargements du document

24