RT Journal Article
T1 Interband optical transitions in DNA-like systems
A1 Díaz García, Elena
A1 Malyshev, Andrey
A1 Domínguez-Adame Acosta, Francisco
AB The underlying band structure of the uniform DNA suggests the allowance of interband optical transitions. We consider such transitions in the uniform synthetic DNA, such as the poly(G)-poly(C) DNA, within a simple tight-binding model with a minimum set of parameters. We demonstrate that the helical conformation of the DNA strands results in unusual interband optical transitions all of which appear to be indirect in k space although the system has a direct band gap energy structure. Simple relationships of the optical gap and absorption linewidth to tight-binding model parameters are found. We study also the effect of disorder in base levels (relevant for the wet form of the DNA) on interband optical transitions.
PB American Physical Society
SN 1098-0121
YR 2007
FD 2007-11
LK https://hdl.handle.net/20.500.14352/51244
UL https://hdl.handle.net/20.500.14352/51244
LA eng
NO © 2007 The American Physical Society.The authors thank E. Maciá, A. Rodríguez, and P. A. Orellana for helpful discussions. This work was supported by MEC  Project MOSAICO. A.V.M. acknowledges financial support from MEC through the Ramón y Cajal program.
NO MEC
DS Docta Complutense
RD 13 abr 2025