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Proximity-induced superconductivity in DNA.

A Y Kasumov·M Kociak·S Guéron·B Reulet·V T Volkov·D V Klinov·H Bouchiat
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Abstract

Conductivity measurements on double-stranded DNA molecules deposited by a combing process across a submicron slit between rhenium/carbon metallic contacts reveal conduction to be ohmic between room temperature and 1 kelvin. The resistance per molecule is less than 100 kilohm and varies weakly with temperature. Below the superconducting transition temperature (1 kelvin) of the contacts, proximity-induced superconductivity is observed. These results imply that DNA molecules can be conducting down to millikelvin temperature and that phase coherence is maintained over several hundred nanometers.

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DNAElectric ConductivityElectric ImpedanceElectrochemistryElectrodesMicroscopy, Atomic ForceTemperatureJournal Article

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A Y Kasumov, M Kociak, S Guéron, B Reulet, V T Volkov, D V Klinov, H Bouchiat. 2001-01-12. Proximity-induced superconductivity in DNA.. https://doi.org/10.1126/science.291.5502.280

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