Transverse tunneling current through guanine traps in DNA
Mesoscale and Nanoscale Physics
2009-11-11 v1
Abstract
The current - voltage dependence of the transverse tunneling current through the electron or hole traps in a DNA is investigated. The hopping of the charge between the sites of the trap and the charge-phonon coupling results in a staircase structure of the I-V curve. For typical parameters of the DNA molecule the energy characteristics of a DNA trap can be extracted from the I-V dependence, viz., for a small gate voltage the phonon frequency and for a large gate voltage the hopping integral can be found from the positions of the steps in the I-V curve. Formation of the polaronic state also results in the redistribution of the tunneling current between the different sites of the traps.
Keywords
Cite
@article{arxiv.cond-mat/0508475,
title = {Transverse tunneling current through guanine traps in DNA},
author = {V. Apalkov and T. Chakraborty},
journal= {arXiv preprint arXiv:cond-mat/0508475},
year = {2009}
}