Correlations between transport coefficients and electronic structure for 1-2-3 (Ca0.1La0.9)(Ba1.65La0.35)Cu3Oy superconductors

Normal-state transport properties of (Ca0.1La0.9)(Ba1.65La0.35)Cu3Oy ceramic superconductors have been studied. The oxygen content (y) was varied from 6.75 to 7.23 by annealing in atmospheres of various oxygen partial pressures (up to 1330 bar). That way the concentration of mobile charge carriers w...

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Bibliographic Details
Published inSuperconductor science & technology Vol. 17; no. 4; pp. 596 - 600
Main Authors Matusiak, M, Plackowski, T, Sułkowski, C
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2004
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Summary:Normal-state transport properties of (Ca0.1La0.9)(Ba1.65La0.35)Cu3Oy ceramic superconductors have been studied. The oxygen content (y) was varied from 6.75 to 7.23 by annealing in atmospheres of various oxygen partial pressures (up to 1330 bar). That way the concentration of mobile charge carriers was varied throughout the entire doping range. The most reduced sample in our series (y = 6.75) is non-superconducting. The first superconducting, underdoped sample (y = 7.00) has a critical temperature of Tc = 16.9 K. The Tc rises further to 30.1 K for y = 7.10 (optimal doping) and then continuously drops to 8.8 K for y = 7.23 (overdoped region).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/17/4/005