Raman spectroscopic study of the rare-earth fullerides Eu6-xSrxC60

J. Arvanitidis, D. Christofilos, G. A. Kourouklis, A. Paloumpi, K. Papagelis, S. Ves, Y. Iwasa, K. Prassides

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We present Raman spectroscopic studies of the isostructural and isoelectronic Eu6 xSrxC60 (x = 0, 3, 5, 6) and Ba6C60 compounds. The Raman spectra of the Eu-based fullerides show dramatic changes compared to the pure alkaline-earth systems, including significant broadening, splitting and frequency shifts of the fivefold degenerate Hg intramolecular modes of C60 Moreover, the Ag (2) mode exhibits an even larger downshift and a remarkable broadening. These findings are consistent with distortions of the C60 molecular cages and a considerable electron-phonon coupling strength-strongly enhanced in the Eu containing systems-originating from the strong orbital hybridization between the metal atom and the C60 molecule.

Original languageEnglish
Pages (from-to)2490-2493
Number of pages4
JournalNanoscale
Volume3
Issue number6
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Materials Science(all)

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