Normal-state Nernst effect of a high-critical-temperature superconductor
- SUPRAS, Institute of Physics, B5, University of Liege, Sart Tilman, B-4000 Liege (Belgium)
We have analyzed the data of Clayhold {ital et} {ital al}. for the Nernst effect in the normal state of a high critical superconductor, i.e., Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8+{delta}}. This requested to derive a kinetic expression for the Nernst effect, an expression able to take into account inelastic scattering and magnetic-field dependence. This was done along a relaxation time formalism for the solution of the Boltzmann equation but leaving a {ital background} {ital term} which can be calculated by the most appropriate method. The final calculation leads to the evaluation of the {ital background} {ital term} resulting from the thermoelectric field-free effect. In order to do this we have considered a model of Livanov and Sergeev. The Nernst effect is explained by a simple two band model for electrons and holes with different mobilities. The resulting fit to the experimental data looks rather convincing. Several predictions are made thereafter. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 284377
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 53, Issue 21; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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