title: Scanning tunneling spectroscopy of single DNA molecules.
abstract: We briefly present the results of recent experiments of transverse scanning tunneling spectroscopy of homogeneous poly(dG)-poly(dC) DNA molecules and discuss them in the light of theoretical investigation. A semiempirical theoretical model is adopted to describe the transverse tunneling current across a DNA molecule placed between a metallic gold substrate and a metallic STM tip. We show that the main trends in the positions and relative magnitudes of the conductance peaks can be explained by a minimal model of a double tunnel junction with the molecule-electrode couplings and the applied voltage explicitly taken into account.
authors: Institute for Theoretical Physics, University of Regensburg, Regensburg 93040, Germany.
authors: Dmitry A
authors: DA
authors: Ryndyk
authors: Errez
authors: E
authors: Shapir
authors: Danny
authors: D
authors: Porath
authors: Arrigo
authors: A
authors: Calzolari
authors: Rosa
authors: R
authors: Di Felice
authors: Gianaurelio
authors: G
authors: Cuniberti