Titre :

Kosterlitz-Thouless signatures in the low-temperature phase of layered three-dimensional systems

Auteur(s) :

Rançon, Adam [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Dupuis, Nicolas [Auteur]
Laboratoire de Physique Théorique de la Matière Condensée [LPTMC]

Titre de la revue :

Physical Review B

Pagination :

214512

Éditeur :

American Physical Society

Date de publication :

2017

ISSN :

2469-9950

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Physique Générale [physics.gen-ph]

Résumé en anglais : [en]

We study the quasi-two-dimensional quantum O(2) model, a quantum generalization of the Lawrence-Doniach model, within the nonperturbative renormalization-group approach and propose a generic phase diagram for layered ...
Lire la suite >We study the quasi-two-dimensional quantum O(2) model, a quantum generalization of the Lawrence-Doniach model, within the nonperturbative renormalization-group approach and propose a generic phase diagram for layered three-dimensional systems with an O(2)-symmetric order parameter. Below the transition temperature we identify a wide region of the phase diagram where the renormalization-group flow is quasi-two-dimensional for length scales smaller than a Josephson length lJ, leading to signatures of Kosterlitz-Thouless physics in the temperature dependence of physical observables. In particular the order parameter varies as a power law of the interplane coupling with an exponent which depends on the anomalous dimension (itself related to the stiffness) of the strictly two-dimensional low-temperature Kosterlitz-Thouless phase.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL