POUCHARD, Michel; DOUMERC, Jean-Pierre; VILLESUZANNE, Antoine

doi:10.1021/ic801266q

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

POUCHARD, Michel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DOUMERC, Jean-Pierre
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

VILLESUZANNE, Antoine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

Langue

Article de revue

Ce document a été publié dans

Inorganic Chemistry. 2008, vol. 47, n° 24, p. 11958-11964

American Chemical Society

Résumé en anglais

While approaching a Mott−Hubbard transition by hole doping of the pristine La2CuO4 cuprate, excitons are created because of exciton−exciton and exciton-doping hole stabilizing interactions. Here, excitons are of charge-transfer Frenkel-type, with effective Cu+O− electrical dipoles that solvate the doping charges. Assuming a moderate screening by charge carriers, we show that mobile exciton-solvated doping holes should be associated in pairs either by a deep energy well or as thermodynamically stable pairs that can glide in the [100] or [010] direction after Bose condensation. Exciton−exciton dipolar interactions constitute thus the “pairing glue” in this model, which is based on instantaneous interactions and intrinsically differs from the previous excitonic models, in which BCS virtual phonons were replaced by virtual excitons.< Réduire

Mots clés en anglais

Charge transfer

Cuprates

High-Tc

Excitons

Métadonnées

Licence d’utilisation du document

Real-space pairing through charge transfer excitons in High-Tc cuprates

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche