Spin gap and Luttinger liquid description of the NMR relaxation in carbon nanotubes

Abstract

Recent NMR experiments by Singer et al. [Singer et al. Phys. Rev. Lett. 95, 236403 (2005).] showed a deviation from Fermi-liquid behavior in carbon nanotubes with an energy gap evident at low temperatures. Here, a comprehensive theory for the magnetic field and temperature dependent NMR 13C spin-lattice relaxation is given in the framework of the Tomonaga-Luttinger liquid. The low temperature properties are governed by a gapped relaxation due to a spin gap (~ 30K), which crosses over smoothly to the Luttinger liquid behaviour with increasing temperature.

5 pages, 1 figure, 1 table

References in corpus (1)

• Finite-Size Bosonization and Self-Consistent Harmonic Approximation

Cited by in corpus (3)

• Electron spin resonance signal of Luttinger liquids and single-wall carbon nanotubes
• Dynamical correlations in the spin-half two-channel Kondo model
• Strong correlation effects in single-wall carbon nanotubes