Optical conductivity of high- T c cuprate thin films deposited by multi-target laser ablation

Sandrine Pessaud; François Gervais; Domingos De Sousa; Ricardo Lobo; Corinne Champeaux; Pascal Marchet; Alain Catherinot; Jean Louis Longuet; Frédéric Ravel

Optical conductivity of high- T c cuprate thin films deposited by multi-target laser ablation

Sandrine Pessaud François Gervais Domingos De Sousa Ricardo Lobo ¹ Corinne Champeaux ² Pascal Marchet ³ Alain Catherinot ² Jean Louis Longuet Frédéric Ravel

1 LPEM - Laboratoire de Physique et d'Etude des Matériaux

2 Axe 2 : procédés de traitements de surface

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

3 Axe 3 : organisation structurale multiéchelle des matériaux

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

Abstract : Superconducting cuprate thin films were grown upon MgO single crystals by alternating laser pulses in controlled sequences upon an insulating MCuO2 target (M = Ca, Sr) and a YBa2 Cu3 O7-delta (YBCO) target. The infrared conductivity of the series of films obtained by this multi-target laser ablation technique is deduced from the analysis of infrared reflectivity. The method of fitting by a `double-damping' Drude model is emphasized and applied to cuprate thin films in a situation in which current Kramers-Kronig analysis is hardly applicable. The agreement of experiment and model is found to be as good as for other conducting oxides investigated previously, including those without transition-metal elements. The concentration dependence of the infrared conductivity profile is discussed.

Type de document :

Article dans une revue

Domaine :

Chimie / Matériaux

Sciences de l'ingénieur [physics] / Matériaux

Liste complète des métadonnées

https://hal-unilim.archives-ouvertes.fr/hal-01799317
Contributeur : Beatrice Derory <>
Soumis le : jeudi 24 mai 2018 - 15:34:49
Dernière modification le : jeudi 4 juillet 2019 - 11:00:07

Optical conductivity of high- T c cuprate thin films deposited by multi-target laser ablation

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Optical conductivity of high- T c cuprate thin films deposited by multi-target laser ablation

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