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Filamentary Superconductivity in the New 2212-Type Compound (Pb0.5Cu0.5)2(Ba0.5Sr0.5)2YCu2O8
並列摘要
Filamentary superconductivity have been observed below Tc of 14 K for sintered-polycrystalline (Pb0.5Cu0.5)2(Ba0.5Sr0.5)2YCu2O8 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(Ba0.5Sr0.5)2YCu2O8-6 is inhomogeneous. The oxygen off-stoichiomerric 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.
並列關鍵字
無資料被引用紀錄
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延伸閱讀
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