Thermopower and the electron-phonon interaction in high-T/sub c/ superconductors
The temperature dependence of metallic diffusion thermopower arising from electron-phonon enhancement is calculated for high-T/sub c/ superconductors, in particular La-Sr-Cu-O. The potential usefulness of thermopower is demonstrated by a similar calculation for high-resistivity Chevrel superconductors, which gives an excellent description of their total thermopower and provides evidence for a normal electron phonon interaction. An analysis of diffusion thermopower in present measurements on metallic high-T/sub c/ superconductors is prevented by phonon drag or other effects; measurements on more disordered samples are needed to permit a comparison with our calculations and help determine the role of the electron-phonon interaction in these systems.
- Research Organization:
- Max-Planck Institut fuer Festkoerper-p forschung, Postfach 80 06 65, 7000 Stuttgart 80, Federal Republic of Germany
- OSTI ID:
- 5451692
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:10; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Phonon-drag thermopower correlations to {ital T}{sub {ital c}} in superconducting Sr{sub {ital x}}Nd{sub 1{minus}{ital x}}CuO{sub 2{minus}{delta}}: Evidence for phonon-mediated pairing in the high-{ital T}{sub {ital c}} parent compounds
High-frequency phonons drive large phonon-drag thermopower in semiconductors at high carrier density
Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIFFUSION
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
GORKOV-ELIASHBERG THEORY
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE