In-plane thermoelectric power of untwinned YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.13140· OSTI ID:7039730

Cohn, J L; Skelton, E F; Wolf, S A ^[1]; Liu, J Z ^[2]

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1. Materials Physics Branch, Naval Research Laboratory, Washington, D.C. 20375 (United States)
2. Physics Department, University of California, Davis, Davis, California 95616 (United States)

We present the first measurements of the temperature and oxygen-doping dependences of thermoelectric power in the {ital ab} plane of untwinned YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} ({delta}{approx}0.10) for {ital T}{le}330 K. Employing a two-band model and measured electrical resistivities, we derive the chain and plane components of the thermopower, {ital S}{sub ch} and {ital S}{sub pl}. The behavior of {ital S}{sub ch} indicates that some of the chain conduction occurs via carriers in a narrow band. {ital S}{sub pl}({ital T}) is similar to the in-plane thermopower of the other cuprates, suggesting a universal'' behavior for the CuO{sub 2} planes. The results are discussed with reference to the known Fermi surface.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7039730
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:22; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
MATERIALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN ADDITIONS
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
SUBSTOICHIOMETRY
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TWINNING
YTTRIUM COMPOUNDS
YTTRIUM OXIDES