Thermopower and the electron-phonon interaction in high-Tc superconductors
A. B. Kaiser
DOI 10.1103/PhysRevB.37.5924 · Physical Review B
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Abstract
The temperature dependence of metallic diffusion thermopower arising from electron-phonon enhancement is calculated for high-Tc 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-Tc 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Cu1.8Mo6S5Te3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.76 | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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