Proximity-Induced Superconductivity in DNA-Reference-Cited by-同舟云学术

Proximity-Induced Superconductivity in DNA

Published:2001-01-12 Issue:5502 Volume:291 Page:280-282
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kasumov A. Yu.¹²,Kociak M.¹,Guéron S.¹,Reulet B.¹,Volkov V. T.²,Klinov D. V.³,Bouchiat H.¹

Affiliation:

1. Laboratoire de Physique des Solides, Associé au CNRS, Bât 510, Université Paris-Sud, 91405, Orsay, France.

2. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka 142432 Moscow Region, Russia.

3. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, Moscow 117871, Russia.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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