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Conducting fulleride polymers

  • András Jánossy
  • Sándor Pekker
  • Gábor Oszlányi
  • László Korecz
  • László Forró
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 81)

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.

Keywords

Charge Density Wave Metal Insulator Transition Spin Susceptibility Spin Lattice Relaxation Rate Conduction Electron Spin Resonance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Tokyo 1996

Authors and Affiliations

  • András Jánossy
    • 1
  • Sándor Pekker
    • 2
  • Gábor Oszlányi
    • 2
  • László Korecz
    • 3
  • László Forró
    • 4
  1. 1.Institute of PhysicsTechnical University BudapestBudapestHungary
  2. 2.Research Institute for Solid State PhysicsBudapestHungary
  3. 3.Central Research Institute for ChemistryHungary
  4. 4.Laboratoire de Physique des Solides Semicristallins, IGA, Departement de PhysiqueEcole Polytechnique Federale de LausanneLausanneSwitzerland

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