CATHODOLUMINESCENCE OF HIGH-T<sub>c</sub> SUPERCONDUCTORS Y–Ba–Cu AND La–Ba–Cu: THE RELATION BETWEEN RADIATION CENTERS AND OXYGEN SUBSYSTEM
I. Ya. Fugol’Institute for Low Temperature Physics and Engineering, Ukrainian S. S. R. Academy of Sciences, 47 Lenin Avenue, Kharkov, 310164, USSRV. N. SamovarovInstitute for Low Temperature Physics and Engineering, Ukrainian S. S. R. Academy of Sciences, 47 Lenin Avenue, Kharkov, 310164, USSRYu. I. RybalkoInstitute for Low Temperature Physics and Engineering, Ukrainian S. S. R. Academy of Sciences, 47 Lenin Avenue, Kharkov, 310164, USSRV. M. ZhuravlevInstitute for Low Temperature Physics and Engineering, Ukrainian S. S. R. Academy of Sciences, 47 Lenin Avenue, Kharkov, 310164, USSR
1990en
ABI
Abstract
Cathodoluminescence spectra of superconducting ceramic Y–Ba–Cu and La–Ba–Cu samples, texturated Y–Ba–Cu films and some classical metals and insulators are investigated. The HTSC multicomponent spectra display two characteristic spectral series of wide bands and narrow lines that are sensitive to the superconducting phase. The luminescence components can be attributed to oxygen radiation centers in the bulk and at the surface of the samples, namely, negative atomic and molecular ions, neutral molecules and oxygen vacancy-based centers.
Identifiers
Citations and references
Cited by 20 references