Isotropy in 13C Hyperfine Coupling in K3C60

Susumu Sasaki, Azusa Matsuda, C. W. Chu

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We report on a study of carbon thirteen (13C) NMR spectra in a superconducting fulleride K3C60. It is found that the spectra are reproduced as powder patterns of anisotropic NMR shifts. By analyzing the NMR shifts, the ratio of isotropic hyperfine coupling (Aiso spin) of conduction electrons to anisotropic one (Aax spin) is obtained experimentally for the first time (Aiso spin/Aax spin = 0.78). The substantial isotropy is consistent with the crystal structure of the C60 molecule. The contribution of carbon pπ-orbitals to Aax spin is found to be dominant.

Original languageEnglish
Pages (from-to)2389-2392
Number of pages4
JournalJournal of the Physical Society of Japan
Issue number8
Publication statusPublished - 1996
Externally publishedYes



  • C NMR
  • Anisotropy
  • Hyperfine coupling
  • KC
  • Knight shift
  • Pir-orbitals
  • Powder pattern
  • Superconducting fulleride

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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