Gutierrez, R. and Mohapatra, S. and Cohen, H. and Porath, D. and Cuniberti, G. (2006) Inelastic quantum transport in a ladder model: Implications for DNA conduction and comparison to experiments on suspended DNA oligomers. PHYSICAL REVIEW B, 74 (23): 235105. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
We investigate quantum transport characteristics of a ladder model, which effectively mimics the topology of a double-stranded DNA molecule. We consider the interaction of tunneling charges with a selected internal vibrational degree of freedom and discuss its influence on the structure of the current-voltage characteristics. Further, molecule-electrode contact effects are shown to dramatically affect the orders of magnitude of the current. Recent electrical transport measurements on suspended DNA oligomers with a complex base-pair sequence, revealing strikingly high currents, are also presented and used as a reference point for the theoretical modeling. A semiquantitative description of the measured I-V curves is achieved, suggesting that the coupling to vibrational excitations plays an important role in DNA conduction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHARGE-TRANSPORT; ELECTRICAL-TRANSPORT; ELECTRONIC STATES; LONG-RANGE; MOLECULES; SINGLE; POLY(DA)-POLY(DT); POLY(DG)-POLY(DC); LOCALIZATION; WIRE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Jan 2021 06:51 |
| Last Modified: | 18 Jan 2021 06:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33726 |
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