Effects of Electronic Correlations on the Thermoelectric Power of the Cuprates

Abstract

We show that important anomalous features of the normal-state thermoelectric power S of high-Tc materials can be understood as being caused by doping dependent short-range antiferromagnetic correlations. The theory is based on the fluctuation-exchange approximation applied to Hubbard model in the framework of the Kubo formalism. Firstly, the characteristic maximum of S as function of temperature can be explained by the anomalous momentum dependence of the single-particle scattering rate. Secondly, we discuss the role of the actual Fermi surface shape for the occurrence of a sign change of S as a function of temperature and doping.

arXiv comment4 pages, with eps figures

References in corpus (4)

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• Magnetic scaling in cuprate superconductors
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• Thermoelectric power in one-dimensional Hubbard model
• Hall and Seebeck coefficients from bi-directional charge density wave state in high-$T_c$ cuprates
• Behavior of the thermopower in amorphous materials at the metal-insulator transition
• Electron-hole dichotomy and enhancement of thermoelectric power factor by electron-hole-asymmetric relaxation time: a model study on a two-valley system with strong intervalley scattering
• Magnetic Properties of YBa_2Cu_3O_{7-δ} in a self-consistent approach: Comparison with Quantum-Monte-Carlo Simulations and Experiments
• Normal state Nernst effect from bi-directional bond density wave state in high T_c cuprates
• The pseudogap in hole-doped cuprates: possible insights from the Kondo effect