Kosterlitz-Thouless signatures in the ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Kosterlitz-Thouless signatures in the low-temperature phase of layered three-dimensional systems
Author(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]

Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Dupuis, Nicolas [Auteur]
Laboratoire de Physique Théorique de la Matière Condensée [LPTMC]
Journal title :
Physical Review B
Pages :
214512
Publisher :
American Physical Society
Publication date :
2017
ISSN :
2469-9950
HAL domain(s) :
Physique [physics]/Physique [physics]/Physique Générale [physics.gen-ph]
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Popular science :
Non
Source :
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- 1710.01000
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