ANOMALOUS TRANSPORT-PROPERTIES IN SUPERCONDUCTING ND1.85CE0.15CUO4+/-DELTA

被引：142
作者：
JIANG, W
MAO, SN
XI, XX
JIANG, XG
PENG, JL
VENKATESAN, T
LOBB, CJ
GREENE, RL
机构：
[1] Center for Superconductivity Research, Department of Physics, University of Maryland, College Park
[2] National Institute of Standards and Technology, Electron and Optical Physics Division, Gaithersburg
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.73.1291
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a comprehensive study of the in-plane transport properties of Nd2-xCeCuO4+/-delta epitaxial thin films and crystals by both increasing and decreasing delta with Ce content fixed at x almost-equal-to 0.15. We find a remarkable correlation between the appearance of superconductivity and (1) a positive magnetoresistance in the normal state, (2) a positive contribution to the otherwise negative Hall coefficient, and (3) an anomalously large Nernst effect. These results strongly suggest that both holes and electrons participate in the charge transport for the superconducting phase of Nd2-xCexCuO4+/-delta.
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页码：1291 / 1294
页数：4
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