Vibrational enhancement of the effective donor-acceptor coupling
Abstract
The paper deals with a simple three sites model for charge transfer phenomena in an one-dimensional donor (D) - bridge (B) - acceptor (A) system coupled with vibrational dynamics of the B site. It is found that in a certain range of parameters the vibrational coupling leads to an enhancement of the effective donor - acceptor electronic coupling as a result of the formation of the polaron on the B site. This enhancement of the charge transfer efficiency is maximum at the resonance, where the effective energy of the fluctuating B site coincides with the donor (acceptor) energy.
- Publication:
-
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- September 2005
- DOI:
- 10.1134/1.2137374
- arXiv:
- arXiv:cond-mat/0505761
- Bibcode:
- 2005JETPL..82..366L
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Disordered Systems and Neural Networks
- E-Print:
- 5 pages, 3 figures