Thermoelectric power of Nd sub 1. 85 Ce sub 0. 15 CuO sub 4 minus y and Pr sub 1. 85 Ce sub 0. 15 CuO sub 4 minus y

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.7310· OSTI ID:5490555

Lim, Z S ^[1]; Han, K H ^[2]; Lee, S; Jeong, Y H; Salk, S H ^[3]; Song, Y S; Park, Y W ^[4]

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1. Physics Division, Research Institute of Industrial Science and Technology, Pohang, 790-330, Korea (KR)
2. Department of Physics, Pohang Institute of Science and Technology, Pohang, 790-330, Korea
3. Department of Physics, Pohang Institute of Science and Technology, Pohang, 790-330, Korea Physics Division, Research Institute of Industrial Science and Technology, Pohang, 790-330, Korea
4. Department of Physics, Seoul National University, Seoul, 151-742, Korea

The temperature dependence of the thermoelectric power (TEP) for Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}} and Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}} is reported. The key features of the present measurements are as follows: (1) the signs of TEP for both samples are positive, in contrast to the previous results; (2) the TEP for both samples remains flat in the normal state below 250 K but decreases rapidly above 250 K; (3) the TEP of only Pr{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}} shows a peak near 50 K; (4) and, finally, the onset temperatures of the sudden drop of TEP are higher than those of the resistance drop.

• OSTI ID: 5490555
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:10; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRICAL PROPERTIES
LOW TEMPERATURE
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS