A framework for the description of charge order, pseudo and superconducting gap, critical temperature and pairing interaction in cuprate superconductors.
J Phys Condens Matter
; 32(40): 40LT02, 2020 Jun 24.
Article
en En
| MEDLINE
| ID: mdl-32580169
A unified phenomenological description framework is proposed for the evaluation of some of the most important observables of the cuprate superconductors: the pseudogap (PG) ΔPG, the local superconducting amplitudes ΔSC(r i ), the critical temperature T c and charge ordering (CO) parameters. Recent detailed measurements of CO structures and CO wavelengths λ CO are faithfully reproduced by solutions of a Cahn-Hilliard differential equation with a free energy potential V GL that produces alternating small charge modulations. The charge oscillations induce atomic fluctuations that mediate the SC pair interaction proportional to the V GL amplitude. The local SC amplitude and phase θ i are connected by Josephson coupling E J(r ij ) and the SC long-range order transition occurs when [Formula: see text]. The calculated results of the wavelength λ CO, ΔPG, [Formula: see text] and T c calculations are in good agreement with a variety of experiments.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Qualitative_research
Idioma:
En
Revista:
J Phys Condens Matter
Asunto de la revista:
BIOFISICA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Reino Unido