CARRIER RELAXATION THROUGH LOCALIZED STATES IN METALLIC AND INSULATING YBA2CU3O7-DELTA

Authors
MIHAILOVIC D MERTELJ T POBERAJ I DEMSAR J CHEN C
Citation
D. Mihailovic et al., CARRIER RELAXATION THROUGH LOCALIZED STATES IN METALLIC AND INSULATING YBA2CU3O7-DELTA, Journal of superconductivity, 8(4), 1995, pp. 531-534
Citations number
7
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Journal of superconductivity → ACNP
ISSN journal
08961107
Volume
8
Issue
4
Year of publication
1995
Pages
531 - 534
Database
ISI
SICI code
0896-1107(1995)8:4<531:CRTLSI>2.0.ZU;2-X
Abstract
The temperature dependence of photoexcited carrier relaxation in insul ating and metallic YBa2Cu3O7-delta and La1.85Sr0.15CuO4 suggests that carriers relax towards equilibrium by hopping between localized states . The implication is that in the optimally doped superconducting phase , localized states and extended states cc-exist. The findings confirm the polaronic interpretation of the MIR band in the optical conductivi ty.