EXTRA-DRUDE CONTRIBUTION TO THE FAR-INFRARED CONDUCTIVITY OXYGEN-DEFICIENT YBCO FILMS

Authors
DORE P PAOLONE A TATONI S VARSAMIS CP BOFFA V ROMEO C BARBANERA S MURTAS F
Citation
P. Dore et al., EXTRA-DRUDE CONTRIBUTION TO THE FAR-INFRARED CONDUCTIVITY OXYGEN-DEFICIENT YBCO FILMS, International journal of infrared and millimeter waves, 15(4), 1994, pp. 723-738
Citations number
27
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied",Optics
Journal title
International journal of infrared and millimeter waves → ACNP
ISSN journal
01959271
Volume
15
Issue
4
Year of publication
1994
Pages
723 - 738
Database
ISI
SICI code
0195-9271(1994)15:4<723:ECTTFC>2.0.ZU;2-Q
Abstract
We measured reflectance spectra R(v) of oxygen deficient Y1Ba2Cu3O7-x (YBCO) films of different thickness, with critical temperatures betwee n 85 and 87 K. Measurements were made at room temperature between 15 a nd 25000 cm-1. The measured R(v) have a maximum below 100 cm-1 and the n decrease for v --> 0. This low frequency behaviour of R(v) can be ac counted for by considering a relevant extra-Drude contribution to the far infrared optical conductivity of YBCO.