Thermoelectric Figure of Merit of Strongly Correlated Superlattice Semiconductors

TL;DR

This paper investigates the thermoelectric properties of strongly correlated semiconductor superlattices, showing that certain structures can achieve high thermoelectric efficiency with a figure of merit near 2 at room temperature.

Contribution

It introduces a theoretical approach to calculate thermoelectric performance of strongly correlated superlattices using the Anderson Lattice Hamiltonian and slave boson mean field theory.

Findings

ZT reaches nearly 2 at room temperature for quantum wire lattice structures

Strongly correlated superlattices can exhibit high thermoelectric efficiency

Theoretical framework can predict thermoelectric properties of complex materials

Abstract

We solved the Anderson Lattice Hamiltonian to get the energy bands of a strongly correlated semiconductor by using slave boson mean field theory. The transport properties were calculated in the relaxation-time approximation,and the thermoelectric figure of merit was obtained for the strongly correlated semiconductor and its superlattice structures. We found that at room temperature $ZT$ can reach nearly 2 for the quantum wire lattice structure.We believe that it is possible to find high values of thermoelectric figure of merit from strongly correlated semiconductor superlattice systems.