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arXiv · 0910.1147

Incidence of the Tomonaga-Luttinger liquid state on the NMR spin lattice relaxation in Carbon Nanotubes

Y. Ihara·P. Wzietek·H. Alloul·M. H. Rümmeli·Th. Pichler·F. Simon
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Abstract

We report 13C nuclear magnetic resonance measurements on single wall carbon nanotube (SWCNT) bundles. The temperature dependence of the nuclear spin-lattice relaxation rate, 1/T1, exhibits a power-law variation, as expected for a Tomonage-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 behavior is observed suggests that SWCNT is so far the best realization of a one-dimensional quantum metal.

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Y. Ihara, P. Wzietek, H. Alloul, M. H. Rümmeli, Th. Pichler, F. Simon. 2010-05-10. Incidence of the Tomonaga-Luttinger liquid state on the NMR spin lattice relaxation in Carbon Nanotubes. https://doi.org/10.1209/1295-5075%2F90%2F17004

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