Journal
PHYSICAL REVIEW B
Volume 84, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.153107
Keywords
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Funding
- MEXT [19204035, 21360043, 22102501]
- JST
- FIRST-Program
- US Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
- Grants-in-Aid for Scientific Research [21360043, 22102501, 19204035] Funding Source: KAKEN
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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.
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