Incidence of the Tomonaga-Luttinger liquid state on the NMR spin-lattice relaxation in carbon nanotubes
- Author(s)
- Yoshihiko Ihara, Pawel Wzietek, Henri Alloul, Mark Rümmeli, Thomas Pichler, Ferenc Simon
- Abstract
We report C-13 nuclear magnetic resonance measurements on C-13-enriched single-wall carbon nanotube (SWCNT) bundles. The temperature dependence of the nuclear spin-lattice relaxation rate, 1/T-1, exhibits a power law variation, as expected for a Tomonaga-Luttinger liquid (TLL). The observed exponent is smaller than that expected for the two-band TLL model. A departure from the power law is observed only at low T, where thermal and electronic Zeeman energy merge. Extrapolation to zero magnetic field indicates gapless spin excitations. The wide T range on which power law behaviour is observed suggests that SWCNT is so far the best realization of a one-dimensional quantum metal.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Centre National De La Recherche Scientifique (CNRS), Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden
- Journal
- Europhysics Letters
- Volume
- 90
- No. of pages
- 5
- ISSN
- 0295-5075
- DOI
- https://doi.org/10.1209/0295-5075/90/17004
- Publication date
- 2010
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/f082fe0a-1796-49b9-958f-baa94567d56a