@article{6034,
  author = {M. Tomaselli and D. W. Knecht and I. Holleman and G. Meijer and B. H. Meier},
  title = {Evidence for orientational tunneling of CO intercalated in C-60: A nuclear magnetic resonance study},
  abstract = {We characterize the low-temperature dynamics of CO intercalated in C-60 using NMR spectroscopy. CO in C-60 is found to be dynamically inhomogeneous below 30 K: The (CO)-C-13 line shapes reflect a dynamic disorder to static disorder transition, with only quantum tunneling among equivalent orientations in a local S-6 symmetry potential remaining. The increased hindrance of the CO motion cannot be reconciled with common expectations of a homogeneous, thermally activated jumplike reorientation process, but is well accounted for in a model of orientational pinning due to asymmetric distortions of the cage potential. (C) 2000 American Institute of Physics. [S0021-9606(00)70837-3].},
  year = {2000},
  journal = {Journal of Chemical Physics},
  volume = {113},
  number = {13},
  pages = {5141-5144},
  month = {Oct 1},
  isbn = {0021-9606},
  doi = {10.1063/1.1312866},
  language = {eng},
}