Double plateau Tc behaviour in the tetragonal LaBa1.5Ca0.5Cu3Oz superconductor

J. M.S. Skakle*, A. Templeton, E. E. Lachowski, A. R. West

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Slowly cooled samples of the tetragonal superconductor LaBa1.5Ca0.5Cu3Oz show a "double plateau" in plots of Tc against z, whereas quenched samples show a linear variation. No evidence for superstructure formation is observed by electron diffraction. Unit-cell parameters a and c vary linearly with x for slowly cooled samples, but non-linearly for quenched samples. For a given z, the difference in Tc of quenched and slow-cooled samples may indicate a net transfer of charge between the Cu(2)-oxygen planes and the Cu(1)-oxygen chains which is dependent on the thermal history of the samples rather than on ordering of oxygen vacancies.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume260
Issue number1-2
DOIs
Publication statusPublished - 1 Apr 1996

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