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

C. L. Yang*, Y. Y. Hsu, J. H. Shieh, Y. M. Wan, H. C. Ku

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

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.

原文英語
頁(從 - 到)579-582
頁數4
期刊Chinese Journal of Physics
34
發行號2 II
出版狀態已發佈 - 1996
對外發佈

ASJC Scopus subject areas

  • 物理與天文學 (全部)

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