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arXiv · 1104.2119

Non-monotonic temperature dependence of thermopower in strongly correlated electron systems

M. Matsuo·S. Okamoto·W. Koshibae·M. Mori·S. Maekawa
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Abstract

We examine the temperature dependence of thermopower in the single band Hubbard model using dynamical mean-field theory. The strong Coulomb interaction brings about the coherent-to-incoherent crossover as temperature increases. As a result, the thermopower exhibits non-monotonic temperature dependence and asymptotically approaches values given by the Mott-Heikes formula. In the light of our theoretical result, we discuss the thermopower in some transition metal oxides. The magnetic field dependence of the thermopower is also discussed.

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M. Matsuo, S. Okamoto, W. Koshibae, M. Mori, S. Maekawa. 2011-10-19. Non-monotonic temperature dependence of thermopower in strongly correlated electron systems. https://doi.org/10.1103/physrevb.84.153107

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