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    题名: Hole localization in Pr-doped RBa2Cu3O7−y systems
    作者: Kao, H.-C. I.;Yu, F. C.;Guan, W.
    贡献者: 淡江大學化學學系
    关键词: Clustering Protocol;Data Aggregation
    日期: 1997-12
    上传时间: 2013-07-09 15:29:18 (UTC+8)
    出版者: Amsterdam: Elsevier BV * North-Holland
    摘要: The hole concentration per unit cell (p) was measured by using an iodometric titration technique for bulk Gd1-xPrxBa2Cu3O7-y (x = 0.1-0.9) and R0.8Pr0.7Ba2Cu3O7-y (R = Yb, Er, Dy, Gd and Nd) samples. These data were compared with the Hail number per unit cell (nH) at 100 K and superconducting transition temperature (Tc) reported in the literature. We suggest that the hybridization between 4f states of the Pr ion and the conduction band states in CuO2 planes, leading to the hole localization are the mechanism for the suppression of superconductivity in these systems. The correlation between Tc and p cannot be described by the empirical relation observed in many high-Tc oxides.
    關聯: Physica C: Superconductivity and its Applications 292, pp.53-58
    DOI: 10.1016/S0921-4534(97)01723-1
    显示于类别:[化學學系暨研究所] 期刊論文

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