One-Dimensional Metallofullerene Crystal Generated Inside Single-Walled Carbon Nanotubes

K. Hirahara, K. Suenaga, S. Bandow, H. Kato, T. Okazaki, H. Shinohara, S. Iijima
2000 Physical Review Letters  
Electron microscope imaging for gadolinium metallofullerenes encapsulating in single-wall carbon nanotubes ͓͑Gd@C 82 ͒ n @SWNTs͔ identifies the single Gd atom encaged in each. The intermolecular distance between Gd@C 82 is extremely regular, regarding the chains of Gd@C 82 as novel onedimensional crystals. Chemical state analysis of Gd atoms suggests evidence for charge transfer from Gd to either a fullerene cage or a nanotube. The slopes of the temperature dependence of electric resistance for
more » ... the matlike films of ͑Gd@C 82 ͒ n @SWNTs and ͑C 60 ͒ n @SWNTs are much steeper than that for empty SWNTs, suggesting the electron scattering due to the electrostatic potential from inside fullerenes playing an important role.
doi:10.1103/physrevlett.85.5384 pmid:11136002 fatcat:hubqesiae5aptd3rwtn2sqeht4