Istituto per lo Studio dei Materiali Nanostrutturati     
Riccò M., Belli M., Pontiroli D., Mazzani M., Shiroka T., ArčOn D., Zorko A., Margadonna S., Ruani G. Recovering metallicity in A4C60: The case of monomeric Li4C60. In: Physical Review B, vol. 75 pp. 081401-1 - 081401-4. APS, 2007.
The restoration of metallicity in the high-temperature, cubic phase of Li4C60 represents a remarkable feature for a member of the A4C60 family =A=alkali metal , invariably found to be insulators. Structural and resonance technique investigations on Li4C60 at T=600 K, show that its fcc structure is associated with a complete =4e− charge transfer to C60 and a sparsely populated Fermi level. These findings not only emphasize the crucial role played by lattice symmetry in fulleride transport properties, but also re-dimension the role of Jahn-Teller effects in band-structure determination.
DOI: http://dx.doi.org/10.1103/PhysRevB.75.081401
Subject Li4C60
Conduction electrons
Chemical and Knight shifts
Fullerenes and related materials

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