Temperature Dependence of Thermopower in Strongly Correlated Multiorbital Systems
arXiv:1308.0416 · doi:10.7566/JPSCP.3.017014
Abstract
Temperature dependence of thermopower in the multiorbital Hubbard model is studied by using the dynamical mean-field theory with the non-crossing approximation impurity solver. It is found that the Coulomb interaction, the Hund coupling, and the crystal filed splitting bring about non-monotonic temperature dependence of the thermopower, including its sign reversal. The implication of our theoretical results to some materials is discussed.
3 pages, 3 figures