A new type of localized fast moving electronic excitations in molecular chains
arXiv:1404.2093 · doi:10.1016/j.physe.2014.02.025
Abstract
It is shown that in a Holstein molecular chain placed in a strong longitudinal electric field some new types of excitations can arise. This excitations can transfer a charge over large distance (more than 1000 nucleotide pairs) along the chain retaining approximately their shapes. Excitations are formed only when a strong electric field either exists or quickly arises under especially preassigned conditions. These excitations transfer a charge even in the case when Holstein polarons are practically immobile. The results obtained are applied to synthetic homogeneous PolyG/PolyC DNA duplexes. They can be also provide the basis for explanation of famous H.W. Fink and C. Schönenberger experiment on long-range charge transfer in DNA.
4 pages, 3 figures
References in corpus (4)
- Charge transport in poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers
- Electron motion in a Holstein molecular chain in an electric field
- A new approach to microscopic modeling of a hole transfer in heteropolymer DNA
- Possibility of a (bi)polaron high-temperature superconductivity in Poly A/ Poly T DNA duplexes