The thermoelectric transport through a molecular bridge is discussed with an emphasis on the effects of inelastic processes of the transport electrons caused by the coupling to the vibrational modes of the molecule. In particular, it is found that when the molecule is strongly coupled to a thermal bath of its own, which may be at a temperature different from those of the electronic reservoirs, a heat current between the molecule and the electrons can be converted into an electric current. Expressions for the transport coefficients governing this conversion and similar ones are derived, and a possible scenario for increasing their magnitudes is outlined.
Physical Review B
- Pub Date:
- September 2010
- Molecular electronic devices;
- Quantum dots;
- Condensed Matter - Mesoscale and Nanoscale Physics
- 10 pages, 3 figures