Evidence for insulating behavior in the electric conduction of (NH3)K3C60 systems

H. Kitano*, R. Matsuo, K. Miwa, A. Maeda, T. Takenobu, Y. Iwasa, T. Mitani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


The electric conduction of NH3K3-xRbxC60 was studied using the cavity perturbation technique. It was confirmed that (NH3)K3-xRbxC60 was insulating between 4.5 and 250 K. Conductivity of (NH3)K3-xRbxC60 at 200 K was found to be 3-4 orders of magnitude smaller than those of K3C60 and (NH3)NaRb2C60. Difference in conductivity of these materials showed that metal-insulator transition (MIT) in A3C60 systems was driven by the reduction of lattice symmetry from fcc to fcc.

Original languageEnglish
Pages (from-to)964011-964014
Number of pages4
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 2002 Mar 4
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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