2004/10/31 by Rafael Gutiérrez, R. Gutierrez, S. Mandal +3 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced biosensing and bioanalysis techniques #DNA and Nucleic Acid Chemistry #Molecular Junctions and Nanostructures #cond-mat.mes-hall #cond-mat.soft #q-bio.BM #q-bio.MN
paper · pdf · doi:10.1021/nl050623g
published as Nano Letters 5, 1093 (2005) · 5 pages, 3 figures
openalex publication_date 2005/05/21 · arxiv created 2005/05/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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).