AUTHOR=González K. A. , Núñez C. D. , Orellana P. A. , Rosales L. TITLE=Tuning the thermoelectric properties of doped silicene nanoribbon heterostructures JOURNAL=Frontiers in Physics VOLUME=10 YEAR=2023 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.1091325 DOI=10.3389/fphy.2022.1091325 ISSN=2296-424X ABSTRACT=

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.