Filamentary superconductivity in the new 2212-type compound (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2YCu2O8

C. L. Yang, Yung-Yuan Hsu, J. H. Shieh, Y. M. Wan, H. C. Ku

Research output: Contribution to journalArticle

Abstract

Filamentary superconductivity have been observed below Tc of 14 K for sintered-polycrystalline (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2 YCu2O8 samples. Low electrical resistivity shows that this semiconducting sample is near the boundary of metal-insulator transition. The observed filamentary superconductivity indicates that the oxygen concentration of the sample (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2 YCu2O8-δ is inhomogeneous. The oxygen off-stoichiometric parameter 6 plays the role of controlling the variation of free charge carriers in this electronically inhomogeneous sample where part of the sample is across the transition boundary and thus becomes superconducting.

Original languageEnglish
Pages (from-to)579-582
Number of pages4
JournalChinese Journal of Physics
Volume34
Issue number2 II
Publication statusPublished - 1996 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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