Transport properties in Simplified Double Exchange model

Details Transport properties in Simplified Double Exchange model Transport properties in Simplified Double Exchange model

2003-09-07

arxiv.org/abs/cond-mat/0309169v2

Mod. Phys. Lett. B Vol. 17, No. 1 (39-47) (2003)

Physics

Condensed Matter

5 pages, 5 eps figures

Scientific paper

10.1142/S0217984903004853

Transport properties of the manganites by the double-exchange mechanism are considered. The system is modeled by a simplified double-exchange model, i.e. the Hund coupling of the itinerant electron spins and local spins is simplified to the Ising-type one. The transport properties such as the electronic resistivity, the thermal conductivity, and the thermal power are calculated by using Dynamical mean-field theory. The transport quantities obtained qualitatively reproduce the ones observed in the manganites. The results suggest that the Simplified double exchange model underlies the key properties of the manganites.

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