OPTICAL STUDY OF THE DOPING EFFECT OF OXYGEN IN YBA2CU3OY AND BI2SR2CACU2O8-CRYSTALS(DELTA SINGLE)

Authors
NOMEROVANNAYA LV MAKHNEV AA KIRILLOVA MM
Citation
Lv. Nomerovannaya et al., OPTICAL STUDY OF THE DOPING EFFECT OF OXYGEN IN YBA2CU3OY AND BI2SR2CACU2O8-CRYSTALS(DELTA SINGLE), Thin solid films, 234(1-2), 1993, pp. 531-535
Citations number
15
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
Thin solid films → ACNP
ISSN journal
00406090
Volume
234
Issue
1-2
Year of publication
1993
Pages
531 - 535
Database
ISI
SICI code
0040-6090(1993)234:1-2<531:OSOTDE>2.0.ZU;2-R
Abstract
The results of ellipsometric measurements of the optical properties of single crystals of YB2Cu3Oy and Bi2Sr2CaCu2O8+delta at 0.1-5.0 eV are reported as a function of the concentration of free carriers. We show ed that the main feature of the optical conductivity near 1.7 and 4.1 eV in YBa2Cu3Oy and 3.7 eV in Bi2Sr2CaCu2O8+delta and its spectral sha pes are modified similarly in both systems on doping by oxygen. We fou nd that for all superconducting crystals a band at 0.1-0.7 eV is obser ved. The values of plasma frequencies omega(p) and optical effective m asses were evaluated.