Optical and electrical conductivity of La0.8Sr0.2MnO3 thin films depositedby laser ablation

Authors
Coulon, J Hassini, A Gervais, M Douy, A Champeaux, C Lecomte, J Ammor, L Catherinot, A Quoirin, JB Gervais, F
Citation
J. Coulon et al., Optical and electrical conductivity of La0.8Sr0.2MnO3 thin films depositedby laser ablation, MAT SCI E B, 83(1-3), 2001, pp. 227-230
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
83
Issue
1-3
Year of publication
2001
Pages
227 - 230
Database
ISI
SICI code
0921-5107(20010621)83:1-3<227:OAECOL>2.0.ZU;2-7
Abstract
La0.8Sr0.2MnO3 thin films have been grown by pulsed laser deposition on a S rTiO3 (1 0 0) single crystal substrate. The 'metal' (low-temperature)-'insu lator' (high-temperature) phase transition manifests itself by a jump of re sistivity near room temperature. A possible dependence of these properties upon the film thickness is investigated. The optical conductivity is deduce d from the best fit to reflectivity spectra of a 'double-damping Drude' mod el, itself derived from the factorized form of the dielectric function. The model allows in particular to discriminate the contributions to the optica l conductivity of trapped charges (polarons) and mobile charge carriers. (C ) 2001 Elsevier Science B.V. All rights reserved.