Effect of correlated hopping on thermoelectric properties: Exact solutions for the Falicov-Kimball model

TL;DR

This paper investigates how correlated hopping influences charge and heat transport in the Falicov-Kimball model, providing exact solutions for transport coefficients and analyzing their temperature dependence, especially in cases with enhanced thermoelectric properties.

Contribution

It offers exact solutions within dynamical mean field theory for the impact of correlated hopping on thermoelectric transport in the Falicov-Kimball model, highlighting cases with significant property enhancement.

Findings

Correlated hopping significantly alters the density of states and transport functions.

Temperature dependence of transport coefficients shows notable variations.

Strong thermoelectric property enhancements are identified under specific correlated hopping conditions.

Abstract

The effect of correlated hopping on the charge and heat transport is investigated for the Falicov-Kimball model. Exact solutions for the electrical and thermal conductivities and thermoelectric power are obtained within the dynamical mean field theory. The temperature dependences of the transport coefficients are analysed for particular values of correlated hopping which correspond to the significant reconstruction of the density of states and transport function. The cases with strong enhancement of thermoelectric properties are elucidated.