Superconductivity, intragrain penetration depth, and Meissner effect of RuSr2(Gd,Ce)2Cu2O10+δ

Y. Y. Xue, B. Lorenz, A. Baikalov, D. H. Cao, Z. G. Li, C. W. Chu

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

The hole concentration p(δ), the transition temperature Tc, the intragrain penetration depth λ, and the Meissner effect were measured for annealed RuSr2(Gd,Ce)2Cu2O10+δ samples. The intragrain superconducting transition temperature Tc varied from 17 to 40 K while the p changed by only 0.03 holes/CuO2. The intragrain superfluid density 1/λ2 and the diamagnetic drop of the field-cooled magnetization across Tc (the Meissner effect), however, increased more than 10 times. All of these findings are in disagreement with both the Tc vs p and the Tc vs 1/λ2 correlations proposed for homogeneous cuprates, but are in line with a possible phase separation and the granularity associated with it.

Original languageEnglish
Article number014503
Pages (from-to)145031-145035
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number1
DOIs
Publication statusPublished - 2002 Jul 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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