Metallic phase in the metal-intercalated higher fullerene Rb8.8(7)C84

Yoshie Rikiishi, Yoko Kashino, Haruka Kusai, Yasuhiro Takabayashi, Eiji Kuwahara, Yoshihiro Kubozono, Takashi Kambe, Taishi Takenobu, Yoshihiro Iwasa, Naomi Mizorogi, Shigeru Nagase, Susumu Okada

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Abstract

A new material of higher fullerene, RbxC84, was synthesized by intercalating Rb metal into C84 crystals. The RbxC84 crystals showed a simple cubic (sc) structure with lattice constant, a, of 16.82(2)Å at 6.5K, and 16.87(2)Å at 295K. The Rietveld refinements were achieved with the space group, Pa3̄, based on a model that the C2 axis of D2d-C84 aligned along [111]. The sample composition was determined to be Rb8.8(7)C84. The ESR spectrum at 303K was composed of a broad peak with peak-to-peak linewidth ΔHpp of 220G, and a narrow peak with ΔHpp of 24G. Temperature dependence of the broad peak clearly showed a metallic behavior. The metallic behavior was discussed based on a theoretical calculation. This finding of new metallic phase in a higher fullerene is the first step for a development of new types of fullerene materials with novel physical properties such as superconductivity.

Original languageEnglish
Article number224118
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number22
DOIs
Publication statusPublished - 2005 Jun 1
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Rikiishi, Y., Kashino, Y., Kusai, H., Takabayashi, Y., Kuwahara, E., Kubozono, Y., Kambe, T., Takenobu, T., Iwasa, Y., Mizorogi, N., Nagase, S., & Okada, S. (2005). Metallic phase in the metal-intercalated higher fullerene Rb8.8(7)C84. Physical Review B - Condensed Matter and Materials Physics, 71(22), [224118]. https://doi.org/10.1103/PhysRevB.71.224118