This study investigates the electronic and thermoelectric properties of WTe2 armchair and zigzag nanoribbons under external influences such as mechanical strain and magnetic fields. Utilizing the tight-binding model and non-equilibrium Green’s function (NEGF) formalism, we analyze how these external factors affect the electronic band structure, thermal and electrical conductivities, Seebeck coefficient, and thermoelectric figure of merit (ZT). Our findings reveal that strain and magnetic field strength substantially modulate these properties. The zigzag nanoribbon displays a notable band crossing at suggesting the presence of topological edge states. In contrast, the armchair nanoribbon exhibits a band gap of 0.54 eV, which decreases under tensile strain, indicating tunable semiconducting behavior. Thermoelectric analysis shows that increasing strain reduces thermal conductivity while enhancing electrical conductivity at low thermal energies, pointing to improved carrier mobility. Furthermore, an external magnetic field enhances the Seebeck coefficient and ZT value. These results demonstrate the potential for engineering the thermoelectric efficiency of WTe2 nanoribbons through controlled application of strain and magnetic fields, offering promising avenues for advanced nanoscale thermoelectric devices.
