Laser-induced transformation of Li4C60 and Na4C60 polymers into metallic monomeric fulleride phases
2010 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 489, no 1-3, 64-68 p.Article in journal (Refereed) Published
We demonstrate that laser irradiation on the narrow-gap insulator Li4C60 and Na4C60 polymers results in metallic monomeric structures, having the same Raman features as metallic fcc K3C60 and Rb3C60, with orientationally disordered C3-60 anions stable at ambient conditions. The Raman Ag(2) mode indicates that a single phase was obtained. Additionally, a monomeric A4C60-type phase (A = K, Rb) is observed in Na4C60 after irradiation. The electron–phonon coupling constants derived from Raman modes of C3-60 fullerides is found to be higher than that of C3-60 fullerides, agreeing with the trend found in heavy alkali fullerides. We propose possible structures of the metallic phases.
Place, publisher, year, edition, pages
2010. Vol. 489, no 1-3, 64-68 p.
Alkali metal fullerides, C60, Li4C60, Na4C60, fullerene polymers, structural transformation, metal, depolymerization
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-32772DOI: 10.1016/j.cplett.2010.02.009ISI: 000275752100013OAI: oai:DiVA.org:umu-32772DiVA: diva2:305725