Neutron spectroscopy and electron-phonon coupling in alkali-metal-doped fullerides

K. Prassides, C. Christides, M. J. Rosseinsky, J. Tomkinson, D. W. Murphy, R. C. Haddon

Research output: Contribution to journalLetterpeer-review

50 Citations (Scopus)


The vibrational spectrum of saturation-doped insulating Rb6C60has been measured by inelastic neutron scattering at nonzero momentum transfer in the energy range (5 ¸ 200) meV at 20 K. The two lowest-energy fivefold degenerate Hgmodes sharpen substantially in comparison with superconducting K3C60, acquiring comparable widths to those found in pristine C60. This is interpreted as evidence for the importance of these modes in the pairing interaction for superconductivity. We estimate that the radial Hgmodes make a substantial contribution to the total electron-phonon coupling strength in the superconducting fullerides.

Original languageEnglish
Pages (from-to)629-635
Number of pages7
Issue number7
Publication statusPublished - 1992 Aug 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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