| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1544935 | Physica E: Low-dimensional Systems and Nanostructures | 2013 | 6 Pages |
We consider a single level quantum dot interacting with a phonon mode and weakly coupled to metallic leads which are subjected to a time-dependent gate voltage. Electrical conductance, thermopower, and figure of merit are investigated in detail using a Tien–Gordon-type rate equation. In the presence of the microwave field, the electrical conductance exhibits extra peaks whose height is controlled by the magnitude of the microwave field. Furthermore, the oscillation of the thermopower increases in the presence of the time-dependent gate voltage or the electron–phonon interaction. Influence of the electron–phonon interaction, microwave field, temperature, and Coulomb interaction on the figure of merit is also studied.
► Influence of the electron–phonon interaction (EPI) and time-dependent gate voltage on the molecular devices is studied. ► Electrical conductance, thermopower, and figure of merit are analyzed in detail using a Tien–Gordon-type rate equation. ► Time-dependent voltage results in the appearance of extra peaks in electrical conductance, while the electrical conductance reduces in the presence of EPI. ► The influence of the Coulomb repulsion on the figure of merit is also studied.
