title: ac conductivity in a DNA charge transport model.
abstract: We present the ac response of a DNA charge transport model, where the charge in the pi-stack interacts with the base-pair opening dynamics of the double strand. The calculated ac conductivity exhibits prominent peaks at polaron normal modes with electronic character, while weaker response appears at lower frequencies in the vibrational part of the polaron normal mode spectrum. Examples of the former, strong peaks, show redshifts as the amplitude of the ac field increases.
authors.affiliation: Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, D-01187 Dresden, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Maniadis
authors.forename: G
authors.initials: G
authors.lastname: Kalosakas
authors.forename: K O
authors.initials: KO
authors.lastname: Rasmussen
authors.forename: A R
authors.initials: AR
authors.lastname: Bishop
mesh_terms: D003198:Computer Simulation; D004247:DNA / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004553:Electric Conductivity; D004574:Electromagnetic Fields; D008956:Models, Chemical; D009038:Motion; D011829:Radiation Dosage; D055672:Static Electricity
chemical_list: D004247:DNA