Free Access
J. Chim. Phys.
Volume 95, Number 2, February 1998
Page(s) 337 - 340
DOI: 10.1051/jcp:1998142

J. Chim. Phys. Vol. 95, N°2  p. 337-340

ESR and conductivity of carbon nanotubes

E. Jouguelet1, P. Petit1, J.E. Fischer2, A. Thess3 and R.E. Smalley3

1  Institut Charles Sadron, CNRS, 67083 Strasbourg cedex, France
2  Department of Materials Science and Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA 19104-6272, U.S.A.
3  Center for Nanoscale Science and Technology, Rice Quantum Institute, and Departments of Chemistry and Physics, MS-100, Rice University, P.O. Box 1892, Houston, TX 77251, U.S.A.

Carbon nanotubes obtained by laser ablation self-organise in crystalline ropes which are some tens micrometers long. These ropes contain hundreds of closed packed nanotubes on a two-dimensional triangular lattice. In this paper, we present our ESR and conductivity measurements on the bulk unoriented material. The results confirm the theoretical previsions about a metallic behaviour of achiral nanotubes.

Les nanotubes de carbone obtenus par ablation laser s'auto-organisent en fibres cristallines de quelques dizaines de microns de long. Ces fibres contiennent des centaines de nanotubes formant un réseau triangulaire bidimensionnel. Dans cette communication, nous présentons nos résultats de RPE et de mesures de conductivité. Ils confirment les théories prédisant un comportement métallique des nanotubes non-chiraux.

Key words: achiral nanotubes -- metallic behaviour -- dysonian lineshape -- skin depth

© EDP Sciences 1998

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