STUDY OF THE BIREFRINGENCE BY OPTICAL REFLECTIVITY IN YBA2CU3O7 AND ITS VARIATION WITH A SUPERCONDUCTING CURRENT

Authors
DURRELL J HAUCHECORNE G BOK J BOUVIER J BOCCARA AC CONTOUR JP ROGER JP
Citation
J. Durrell et al., STUDY OF THE BIREFRINGENCE BY OPTICAL REFLECTIVITY IN YBA2CU3O7 AND ITS VARIATION WITH A SUPERCONDUCTING CURRENT, Physica. C, Superconductivity, 282, 1997, pp. 1025-1026
Citations number
6
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
2
Pages
1025 - 1026
Database
ISI
SICI code
0921-4534(1997)282:<1025:SOTBBO>2.0.ZU;2-F
Abstract
The birefringence of c-axis thin films of YBa2Cu3O7 has been evaluated by the change in polarization of reflected light. It has been observe d that the flow of an electric current through superconducting YBCO th in film induces an increase in the optical birefringence. That is tent atively explained by a the shift of the oxygens in the chains. The pol arization and the complex refractive index have been computed as a fun ction of the shift of the O atoms: the result is in good agreement wit h the experimental relative phase difference.