Magnetic fullerenes inside single-wall carbon nanotubes

Details Magnetic fullerenes inside single-wall carbon nanotubes Magnetic fullerenes inside single-wall carbon nanotubes

2006-06-23

arxiv.org/abs/cond-mat/0606597v1

Phys. Rev. Lett. 97, 136801 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.97.136801

C59N magnetic fullerenes were formed inside single-wall carbon nanotubes by vacuum annealing functionalized C59N molecules encapsulated inside the tubes. A hindered, anisotropic rotation of C59N was deduced from the temperature dependence of the electron spin resonance spectra near room temperature. Shortening of spin-lattice relaxation time, T_1, of C59N indicates a reversible charge transfer toward the host nanotubes above $\sim 350$ K. Bound C59N-C60 heterodimers are formed at lower temperatures when C60 is co-encapsulated with the functionalized C59N. In the 10-300 K range, T_1 of the heterodimer shows a relaxation dominated by the conduction electrons on the nanotubes.

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