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Laser-induced transformation of Li4C60 and Na4C60 polymers into metallic monomeric fulleride phases
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
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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
Abstract [en]

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.
Keyword [en]
Alkali metal fullerides, C60, Li4C60, Na4C60, fullerene polymers, structural transformation, metal, depolymerization
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-32772DOI: 10.1016/j.cplett.2010.02.009ISI: 000275752100013OAI: oai:DiVA.org:umu-32772DiVA: diva2:305725
Available from: 2010-03-25 Created: 2010-03-25 Last updated: 2017-12-12Bibliographically approved

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Yao, MingguangWågberg, ThomasSundqvist, Bertil
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