Steady-state theory of current transfer

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Current transfer is defined as a charge-transfer process where the transferred charge carries information about its original motion. We have recently suggested that such transfer causes the asymmetry observed in electron transfer induced by circularly polarized light through helical wires. This paper presents the steady-state theory of current transfer within a tight binding model of coupled wires systems. The asymmetry in the system response to a steady current imposed in a particular direction on one of the wires is used to define the efficiency of current transfer. © 2010 American Chemical Society.






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Ben-Moshe, V, A Nitzan, SS Skourtis and DN Beratan (2010). Steady-state theory of current transfer. Journal of Physical Chemistry C, 114(17). pp. 8005–8013. 10.1021/jp100661f Retrieved from

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David N. Beratan

R.J. Reynolds Distinguished Professor of Chemistry

Dr. Beratan is developing theoretical approaches to understand the function of complex molecular and macromolecular systems, including: the molecular underpinnings of energy harvesting and charge transport in biology; the mechanism of solar energy capture and conversion in man-made structures; the nature of charge conductivity in naturally occurring nucleic acids and in synthetic constructs, including the photochemical repair of damaged DNA in extremophiles; CH bond activation by copper oxygenase enzymes; the flow of charge in bacterial appendages on the micrometer length scale; the theoretical foundations for inverse molecular design - the property driven discovery of chemical structures with optimal properties; the exploitation of molecular diversity in the mapping of molecular and materials "space"; the use of infra-red excitation to manipulate electron transport through molecules; the optical signatures of molecular chirality and the influence of chirality on charge transport. Prof. Beratan is affiliated with the Departments of Chemistry, Biochemistry, Physics, as well as Duke's programs in Computational Biology and Bioinformatics, Structural Biology and Biophysics, Nanosciences, and Phononics.  

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