Thermoelectric performance of line-centered honeycomb structures under the influence of chemical potential, strain, and spin-orbit coupling

This paper investigates the thermoelectric properties of the line-centered honeycomb (LCH) structure, focusing on four key transport coefficients: electrical conductivity, thermal conductivity, Seebeck coefficient, and figure of merit. The results reveal that thermal conductivity increases with chemical potential until peaking, whereas electrical conductivity reaches its maximum at zero chemical potential and decreases with further changes in chemical potential. The influence of spin-orbit coupling (SOC), tensile and compressive strain, and a transverse magnetic field on the thermoelectric properties is also thoroughly examined, yielding notable findings. The two key factors influencing conductivity are SOC and strain in the form of compression. The application of these parameters enhances both electrical and thermal conductivity. Additionally, density of states (DOS) diagrams under specific conditions are analyzed to provide deeper insights into the electronic behavior of the LCH structure. The study uses the tight-binding method and Green's function framework, offering a robust approach to understanding the material's thermoelectric response.