RT Journal Article
T1 Electrical conductance in duplex DNA: Helical effects and low-frequency vibrational coupling
A1 Maciá Barber, Enrique Alfonso
AB In this work we consider the combined effect of helical structure and base-pair twist motion on charge transfer through duplex DNA at low temperatures. We present a fully analytical treatment of charge-lattice coupled dynamics in terms of nearest-neighbor tight-binding equations describing the propagation of the charge through an effective linear lattice for certain frequency values. The corresponding effective hopping terms include both helicoidal and dynamical effects in a unified way. Although base-pair motion generally reduces pi-pi stack overlapping, the coupling to certain normal modes gives rise to a significant improvement of the Landauer conductance.
PB American Physical Society
SN 1098-0121
YR 2007
FD 2007-12
LK https://hdl.handle.net/20.500.14352/52101
UL https://hdl.handle.net/20.500.14352/52101
LA eng
NO ©2007 The American Physical Society.I warmly thank Alexander Voityuk for useful comments. I acknowledge M. V. Hernández for a critical reading of the manuscript. This work has been supported by the Universidad Complutense de Madrid through Project No. PR27/05- 14014-BSCH.
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 23 abr 2025