Mott-Hubbard transition in alkali ammonia fullerides

T. Takenobu*, T. Muro, Y. Iwasa, T. Mitani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Monoammoniated alkali fullerides salt (NH3)K3-xRbxC60 (0 ≤ x ≤ 3), forming an isostructural orthorhombic series followed by a Mott-Hubbard type antiferromagnetic transition. The Néel temperature TN was found to first increase with the interfullerene spacing and then decreases for (NH3)Rb3C60, forming a maximum at 76 K. This behavior can not be understood by a simple localized electron model and provides direct evidence for the important role of electron correlation effects.

Original languageEnglish
Pages (from-to)1173-1174
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 2001 Mar 15
Externally publishedYes


  • Diffraction and scattering
  • Electron spin resonance
  • Fullerenes and derivatives
  • Magnetic phase transitions
  • X-ray emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics


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