RT Journal Article
T1 Absence of extended states in a ladder model of DNA
A1 Díaz García, Elena
A1 Sedrakyan, A.
A1 Sedrakyan, D.
A1 Domínguez-Adame Acosta, Francisco
AB We consider a ladder model of DNA for describing carrier transport in a fully coherent regime through finite segments. A single orbital is associated to each base, and both interstrand and intrastrand overlaps are considered within the nearest-neighbor approximation. Conduction through the sugar-phosphate backbone is neglected. We study analytically and numerically the spatial extend of the corresponding states by means of the Landauer and Lyapunov exponents. We conclude that intrinsic-DNA correlations, arising from the natural base pairing, does not suffice to observe extended states, in contrast to previous claims.
PB American Physical Society
SN 1098-0121
YR 2007
FD 2007-01
LK https://hdl.handle.net/20.500.14352/51246
UL https://hdl.handle.net/20.500.14352/51246
LA eng
NO © 2007 The American Physical Society.Work at Madrid was supported by MEC Project FIS2006-01485. D.S. and A.S. acknowledges INTAS grant 03-51-5460 for partial financial support.
NO MEC
NO INTAS
DS Docta Complutense
RD 22 abr 2025