Nonmonotonic temperature dependence of thermopower in strongly correlated electron systems

M. Matsuo, S. Okamoto, W. Koshibae, M. Mori, S. Maekawa

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10 Citations (Scopus)

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 nonmonotonic 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.

Original languageEnglish
Article number153107
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number15
DOIs
Publication statusPublished - 2011 Oct 31

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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