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Enhancement of the transverse conductance in DNA nucleotides

J. Chem. Phys. 128, 041103 (2008); doi:10.1063/1.2835350

Published 29 January 2008

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Vincent Meunier and Predrag S. Krstić
Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, USA
We theoretically study the electron transport properties of DNA nucleotides placed in the gap between two single-wall carbon nanotubes capped or terminated with H or N. We show that in the case of C-cap and H-termination the current at low electric bias is dominated by nonresonant tunneling, similarly to the cases of gold electrodes. In nitrogen-terminated nanotube electrodes, the nature of current is primarily quasiresonant tunneling and is increased by several orders of magnitude. We discuss the consequence of our result on the possibility of recognition at the level of single molecule. ©2008 American Institute of Physics
History: Received 18 October 2007; accepted 26 December 2007; published 29 January 2008
Permalink: http://link.aip.org/link/?JCPSA6/128/041103/1
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KEYWORDS and PACS

Keywords
PACS
  • 87.14.gk
    DNA
  • 87.15.Pc
    Electronic and electrical properties of biomolecules
  • 87.80.Kc
    Electrochemical techniques (biophysical research methods)
  • 73.23.-b
    Electronic transport in mesoscopic systems
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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