Abstract
We theoretically examine the effect of the coupling of the transport electrons to a vibrational mode of the molecule on the ac linear-response conductance of molecular junctions. Representing the molecule by a single electronic state, we find that at very low temperatures the frequency-dependent conductance is mainly enhanced (suppressed) by the electron-vibration interaction when the chemical potential is below (above) the energy of that state. The vertex corrections of the electron-vibration interaction induce an additional peak structure in the conductance, which can be observed by tuning the tunnel couplings with the leads.
| Original language | English |
|---|---|
| Article number | 155438 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 83 |
| Issue number | 15 |
| DOIs | |
| State | Published - 21 Apr 2011 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics