| Issue |
Europhys. Lett.
Volume 37, Number 5, February II 1997
|
|
|---|---|---|
| Page(s) | 341 - 346 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00154-7 | |
| Published online | 01 September 2002 | |
The strange infrared conductivity of La2CuO4.06
1
Centre des Recherches sur la Physique des Hautes Températures, CNRS, F-45071 Orléans Cedex 2, France
2
Laboratoire de Physique de la Matière Condensée, ENS, 24, Rue Lhomond, 75231 Paris Cedex 5, France
3
Laboratoire d'Electrodynamique des Matériaux Avancés, Université François Rabelais, Faculté des Sciences et Techniques, Parc de Grandmont, 37200 Tours, France
4
Department of Physics, College of Sciences, San Diego State University, 92182-0325 San Diego, CA, USA
Received:
28
October
1996
Accepted:
10
January
1997
The infrared reflection spectra of a 
single crystal have been measured on
the ab-plane in the normal and superconducting states. A huge non-conventional thermal
evolution of the reflectivity is observed in the whole measured range (20–10000 cm-1).
Through a Kramers-Kronig analysis of the data we can separate the contributions from the
normal state and Cooper pair condensation. Measurements can be explained by considering a
polaron delocalisation.
PACS: 71.38.+i – Polarons and electron-phonon interactions / 74.25.Gz – Superconductivity: optical properties / 78.30.-j – Infrared and Raman spectra
© EDP Sciences, 1997
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