Transport and electronic properties of Y0.4Pr0.6Ba2-yCu3O7-δ (y = 0, 1.0)

被引：0
|
作者：
Cao, GH [1 ]
Song, HQ [1 ]
Xu, ZA [1 ]
Yu, WH [1 ]
He, JP [1 ]
Zhang, XJ [1 ]
Jiao, ZK [1 ]
机构：
[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1997年 / 11卷 / 29期
关键词：
D O I：
10.1142/S0217979297001702
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report measurements of the resistivity, thermoelectric power and Hall carrier number on Y0.4Pr0.6Ba2-ySryCu3O7-delta (y = 0, 1.0) polycrystalline samples. The Sr-free compound exhibits semiconducting behavior, while the Sr-doped sample is superconducting at 18 K with a possible pseudogap structure at 255 K. Results of the thermoelectric power and Hall measurements revealed that the revival of superconductivity by the Sr substitution is due to the increase of mobile hole-concentration. We present a band picture of Pr4f-O2p hybridization to elucidate the variation of the transport properties.
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页码：3455 / 3460
页数：6
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