Interference Blockade in the Conductance of Organic Molecules

R. Gutierrez; F. Grossmann; R. Schmidt

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arXiv · cond-mat/0211506

Interference Blockade in the Conductance of Organic Molecules

R. Gutierrez·F. Grossmann·R. Schmidt

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Abstract

The conductance of {\em cis/trans} isomers of stilbene molecules connected to armchair single wall carbon nanotubes is studied in the Landauer formalism combined with a density-functional based approach. For a given arrangement of the electrodes, dramatic differences in the transmission between both isomers are found. For a given isomer, the conductance can be varied by orders of magnitude by changing the molecule-electrode relative orientation. Both effects can be explained by a simple, physically transparent interference rule, which suggests a straightforward conductance control in such molecular systems by different switching mechanisms.

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R. Gutierrez, F. Grossmann, R. Schmidt. 2002-11-25. Interference Blockade in the Conductance of Organic Molecules. https://arxiv.org/abs/cond-mat/0211506

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