Quantum transport through a DNA wire in a dissipative environment
Nano Letters 5, 1093 (2005).
R. Gutiérrez, S. Mandai, and G. Cuniberti.
Journal DOI: https://doi.org/10.1021/nl050623g

Electronic transport through DNA wires in the presence of a strong dissipative environment is investigated. We show that new bath-induced electronic states are formed within the band gap. These states show up in the linear conductance spectrum as a temperature dependent background and lead to a crossover from tunneling to thermal activated behavior with increasing temperature. Depending on the strength of the electron-bath coupling, the conductance at the Fermi level can show a weak exponential or even an algebraic length dependence. Our results suggest a new environmentally induced transport mechanism. This might be relevant for the understanding of molecular conduction experiments in liquid solution, such as those recently performed on poly(GC) oligomers in a water buffer (B. Xu et al., Nano Lett. 2004,4, 1105).


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Quantum transport through a DNA wire in a dissipative environment
Nano Letters 5, 1093 (2005).
R. Gutiérrez, S. Mandai, and G. Cuniberti.
Journal DOI: https://doi.org/10.1021/nl050623g

Electronic transport through DNA wires in the presence of a strong dissipative environment is investigated. We show that new bath-induced electronic states are formed within the band gap. These states show up in the linear conductance spectrum as a temperature dependent background and lead to a crossover from tunneling to thermal activated behavior with increasing temperature. Depending on the strength of the electron-bath coupling, the conductance at the Fermi level can show a weak exponential or even an algebraic length dependence. Our results suggest a new environmentally induced transport mechanism. This might be relevant for the understanding of molecular conduction experiments in liquid solution, such as those recently performed on poly(GC) oligomers in a water buffer (B. Xu et al., Nano Lett. 2004,4, 1105).


Cover
©https://doi.org/10.1021/nl050623g
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Involved Scientists