Abstract
The alkali fullerides, (AC60)n with A= K, Rb, Cs are conducting crystalline polymers in which covalently bonded ions form parallel linear chains. The polymerization depolymerization transition at about 400 K is reversible. Unlike other alkali fulleride compounds the polymers are stable in air. Structural aspects are discussed together with electron and nuclear magnetic resonance and frequency dependent conductivity. At ambient temperatures all polymers are strongly correlated metals. (KC60)n remains metallic to low temperatures. (RbC60)n and (CsC60)n have a metal insulator transition below 50 K. Magnetic data indicate that these systems may have quasi one dimensional electronic structures and that the ground state is an ordered spin density wave state. The opposing view believes (AC60)n are 3D conductors like doped (CH)x and (SN)x which are anisotropic but are not quasi one dimensional conductors in spite of the linear chain polymeric structure.
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© 1996 Springer-Verlag Tokyo
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Jánossy, A., Pekker, S., Oszlányi, G., Korecz, L., Forró, L. (1996). Conducting fulleride polymers. In: Kajimura, K., Kuroda, Si. (eds) Materials and Measurements in Molecular Electronics. Springer Proceedings in Physics, vol 81. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68470-1_13
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DOI: https://doi.org/10.1007/978-4-431-68470-1_13
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