Backbone-induced semiconducting behavior in short DNA wires

DOI to cite this document:: 10.5283/epub.1721

Cuniberti, Gianaurelio ; Craco, Luis ; Porath, Danny ; Dekker, Cees

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Date of publication of this fulltext: 05 Aug 2009 13:31

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Abstract

We propose a model Hamiltonian for describing charge transport through short homogeneous double stranded DNA molecules. We show that the hybridization of the overlapping $\pi$, orbitals in the base-pair stack coupled to the backbone is sufficient to predict the existence of a gap in the nonequilibrium current-voltage characteristics with a minimal number of parameters. Our results are in a good ...