Tuning the thermoelectric properties of doped silicene nanoribbon heterostructures

In this work, we investigate the thermoelectrical properties of a silicene nanoribbon heterostructure composed of a central conductor fully doped with ad-atoms and connected to two pristine leads of the same material. Using a tight-binding Hamiltonian, we have calculated the system's thermoelectric properties as a function of the geometrical confinement and external field. Our results exhibit an enhancement of the thermopower when a transverse electric field is applied to the conductor region for different temperatures. In addition, a violation of the Wiedemann-Franz law is observed around the ad-atom energy. Our results suggest the thermoelectric properties of doped silicene nanoribbons can be efficiently tuned with external perturbations.

Automated summary

In this study, the thermoelectrical properties of a silicene nanoribbon heterostructure with a central fully doped conductor and two pristine leads were investigated. Using a tight-binding Hamiltonian, the thermoelectric properties of the system were calculated as a function of confinement and external field. The results showed an enhancement of thermopower in the presence of a transverse electric field and a violation of the Wiedemann-Franz law near the ad-atom energy. These findings indicate that the thermoelectric properties of doped silicene nanoribbons can be efficiently controlled with external perturbations.