Thickness and low-temperature conductivity of DNA molecules

Thickness and low-temperature conductivity of DNA molecules

We argue that interaction between molecules and substrate is a key parameter which determines the conducting or insulating behavior of DNA molecules. In this letter, we show that strongly deformed DNA molecules deposited on a substrate, whose thickness is less than half the native thickness of the m...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters Vol. 84; no. 6; pp. 1007 - 1009
Main Authors: Kasumov, A. Yu, Klinov, D. V., Roche, P.-E., Guéron, S., Bouchiat, H.
Format: Journal Article
Language:English
Published: American Institute of Physics 09-02-2004
Subjects:
Condensed Matter
Other
Physics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We argue that interaction between molecules and substrate is a key parameter which determines the conducting or insulating behavior of DNA molecules. In this letter, we show that strongly deformed DNA molecules deposited on a substrate, whose thickness is less than half the native thickness of the molecule, are insulating, whereas molecules keeping their native thickness are conducting down to very low temperature with a non-ohmic behavior characteristic of a 1D conductor with repulsive electron–electron interactions.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1644909