THERMOELECTRIC-POWER OF PR2-YCEYCUO4-DELTA SUPERCONDUCTORS WITH VARIOUS CONTENT OF CE

被引：5

作者：

KHLOPKIN, MN ^{[1
]}

TOTH, J ^{[1
]}

PANOVA, GK ^{[1
]}

ZAITSEV, RO ^{[1
]}

BABUSHKINA, NA ^{[1
]}

ARNOLD, JA ^{[1
]}

VOINOVA, SE ^{[1
]}

机构：

[1] HUNGARIAN ACAD SCI,SOLID STATE PHYS RES INST,H-1525 BUDAPEST,HUNGARY

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 87卷 / 03期

关键词：

Ceramic materials - Cerium - Charge carriers - Crystal structure - Lanthanum compounds - Praseodymium compounds - Superconductivity - Thermoelectricity - Transport properties;

D O I：

10.1016/0038-1098(93)90478-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature dependence of the thermoelectric power (TEP) of superconducting ceramic Pr2-yCeyCuO4-o samples with various Ce content (0.13 < y < 0.17) has been investigated. The TEP value is small and has a weak temperature dependence within the range of 80-300 K. With increase in Ce content the TEP sign reverses from negative to positive. The comparison of the data obtained with TEP of La2-ySrxCuO4-o compound points to the significantly less value of both the effective mass of carriers and the density of their states in Pr2-yCeyCuO4-o. The Emery model for HTSC explains satisfactorily the experimental data for Pr2-yCeyCuO4-o and La2-xSrxCuO4-o and gives the correct sign and the order of TEP and effective mass value in these compounds.

引用

页码：213 / 217

页数：5

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