Superconductivity and thermoelectric power of Pr sub 1. 85 Ce sub 0. 15 CuO sub 4 minus y

We have prepared Ce{sup 4+}-doped Pr{sub 2}CuO{sub 4} (Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}}) samples with different oxygen contents by annealing at various temperatures under argon atmosphere. Measurements of resistance and thermoelectric power of these samples reveal that there exists...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1990-02, Vol.41:4
Main Authors: Lee, S., Jeong, Y.H., Han, K.H., Lim, Z.S., Song, Y.S., Park, Y.W.
Format: Article
Language:English
Subjects:
360204 - Ceramics, Cermets, & Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
ANNEALING
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HEAT TREATMENTS
LOW TEMPERATURE
MATERIALS SCIENCE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have prepared Ce{sup 4+}-doped Pr{sub 2}CuO{sub 4} (Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}}) samples with different oxygen contents by annealing at various temperatures under argon atmosphere. Measurements of resistance and thermoelectric power of these samples reveal that there exists a correlation between the superconducting transition and the thermoelectric properties in this new copper oxide compound. The most striking finding is that the thermopowers of superconducting samples have positive values in strong contrast to the negative thermopowers of nonsuperconducting samples. This result is contrary to our naive expectation that the thermopowers of these materials will be negative in view of the negative Hall coefficients. The physical implications of our result are discussed.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.41.2623