UNUSUAL PROPERTIES OF ND1.85CE0.15CUO4+/-DELTA WITH VARYING OXYGEN CONCENTRATION

被引：5

作者：

JIANG, W

MAO, SN

XI, XX

JIANG, XG

PENG, JL

VENKATESAN, T

LOBB, CJ

GREENE, RL

机构：

[1] Ctr. for Superconductivity Research, Dept. of Physics, Univ. of Maryland, College Park

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)91926-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied in detail the in-plane transport properties of Nd1.85Ce0.15CUO4+/-delta (NCCO) films and crystals over a wide range of oxygen concentration, We find that the appearence of superconductivity strongly correlates with a positive magnetoresistance in the normal state as well as a positive component to the negative Hall coefficient. Together with our observation of an anomalously large discrepency between the Hall angle obtained from the Hall effect and resistivity and that obtained from the Nernst and Seebeck effects, our data provide strong evidence for the existence of hole and electron carriers in this ''electron-doped'' superconductor.

引用

页码：1403 / 1404

页数：2