Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ

R. B. van Dover, L. F. Schneemeyer, R. J. Felder, J. V. Waszczak

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Single crystals of Ba2YCu3O7-δ were equilibrated at ∼400-500°C to obtain δ∼0.05-0.15, with Tc87-83 K, respectively. Despite the consequent increase in point defects, the field-broadened resistive transition (B|c) ofhe crystal with Tc∼83 K indicates a marked reduction in the pinning energy compared with the fully oxidized case. The c-axis coherence length, inferred from the fluctuation conductivity, does not change. We speculate that the pinning energy decrease is due to a decrease in coupling between superconducting CuO planes due to proximity-effect reduction of the order parameter on CuO chains.

Original languageEnglish
Pages (from-to)13-19
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume193
Issue number1-2
DOIs
StatePublished - 1 Apr 1992

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Oxygen
oxygen
Point defects
point defects
Single crystals
conductivity
Crystals
energy
single crystals
crystals

Cite this

van Dover, R. B. ; Schneemeyer, L. F. ; Felder, R. J. ; Waszczak, J. V. / Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ. In: Physica C: Superconductivity and its applications. 1992 ; Vol. 193, No. 1-2. pp. 13-19.
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Anomalous pinning behavior in slightly-oxygen-deficient Ba2YCu3O7-δ. / van Dover, R. B.; Schneemeyer, L. F.; Felder, R. J.; Waszczak, J. V.

In: Physica C: Superconductivity and its applications, Vol. 193, No. 1-2, 01.04.1992, p. 13-19.

Research output: Contribution to journalArticle

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