Metallic bundles of single-wall carbon nanotubes probed by electron spin resonance

Author(s)

Ferenc Simon, D. Quintavalle, A Jánossy, B. Nafradi, László Forro, Hans Kuzmany, Frank Hauke, Andreas Hirsch, Jens Mende, Michael Mehring

Abstract

C59N magnetic fullerenes inside single-wall carbon nanotubes (SWCNTs) are used to probe the density of states (DOS) on the host tubes using electron spin resonance (ESR). The C59N radicals are separated by C-60 fullerenes to prevent dimerization and C59N-C-60 heterodimers are formed at low temperatures. The electron spin-lattice relaxation time, T-1, of the heterodimers is deduced from the homogeneous ESR line-width. The analysis is supported by saturation ESR studies. The inverse of the heterodimer T-1 follows a linear behavior in the 20-300 K temperature range, the so-called Korringa law, evidencing a metallic DOS on all tubes in a bundle.

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

Budapest University of Technology and Economics, École polytechnique fédérale de Lausanne, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universität Stuttgart

Journal

Physica Status Solidi. B: Basic Research

Volume

244

Pages

3885-3889

No. of pages

5

ISSN

0370-1972

DOI

https://doi.org/10.1002/pssb.200776174

Publication date

2007

Peer reviewed

Yes

Austrian Fields of Science 2012

103015 Condensed matter

Portal url

https://ucrisportal.univie.ac.at/en/publications/e404df0c-f8cd-4e84-9128-f9ae35ee1c97