Charge transport properties of a twisted DNA molecule: A renormalization approach

In this work we study the charge transport properties of a nanodevice consisting of a finite segment of the DNA molecule sandwiched between two metallic electrodes. Our model takes into account a nearest-neighbor tight-binding Hamiltonian considering the nucleobases twist motion, whose solutions mak...

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Bibliographic Details
Published in:Chemical physics 2016-10, Vol.478, p.48-54
Main Authors: de Almeida, M.L., Ourique, G.S., Fulco, U.L., Albuquerque, E.L., de Moura, F.A.B.F., Lyra, M.L.
Format: Article
Language:English
Subjects:
Electronic transmittance spectra
I × V characteristic curves
Renormalization approach
Tight-binding Hamiltonian
Twisted DNA segment
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Summary:In this work we study the charge transport properties of a nanodevice consisting of a finite segment of the DNA molecule sandwiched between two metallic electrodes. Our model takes into account a nearest-neighbor tight-binding Hamiltonian considering the nucleobases twist motion, whose solutions make use of a two-steps renormalization process to simplify the algebra, which can be otherwise quite involved. The resulting variations of the charge transport efficiency are analyzed by numerically computing the main features of the electron transmittance spectra as well as their I×V characteristic curves.
ISSN:0301-0104
DOI:10.1016/j.chemphys.2016.05.020