Thermopower and the electron-phonon interaction in high-superconductors
- 1 April 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (10), 5924-5927
- https://doi.org/10.1103/physrevb.37.5924
Abstract
The temperature dependence of metallic diffusion thermopower arising from electron-phonon enhancement is calculated for high- 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- 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.
Keywords
This publication has 27 references indexed in Scilit:
- Experimental evidence for multi-band conduction in highly-doped La-Sr-Cu-O superconductorsPhysics Letters A, 1987
- Thermal transport properties of Y superconductorsPhysical Review B, 1987
- Electronic transport in highly dopedsuperconductorsPhysical Review B, 1987
- Resistivity of and to 1100 K: Absence of saturation and its implicationsPhysical Review Letters, 1987
- Band-theory analysis of anisotropic transport inCu-based superconductorsPhysical Review B, 1987
- Nonzero isotope effect inPhysical Review Letters, 1987
- Resonating–valence-bond theory of phase transitions and superconductivity in-based compoundsPhysical Review Letters, 1987
- Why isof the oxide superconductors so low?Physical Review Letters, 1987
- Transport properties of the superconducting oxidePhysical Review B, 1987
- Normal- and superconducting-state properties ofPhysical Review B, 1987