Orientationally-ordered primitive-cubic form of the fulleride CsC{sub 60}
- Univ. of Sussex, Brighton (United Kingdom)
- NEC Fundamental Research Lab., Tsukuba (Japan)
In this communication, we report that rapid cooling of CsC{sub 60} from the high-temperature fcc phase to liquid nitrogen temperatures suppresses the low-symmetry instabilities and leads instead to the formation of a cubic phase with primitive symmetry (space group Pa3{bar O}), resulting from the orientational ordering of the fulleride ions in the unit cell. The three-dimensional (3D) character of the structure sensitively affects the electronic and conducting properties of the material, as it no longer suffers from low-dimensional structural and magnetic instabilities. Current evidence from the temperature independence of the spin susceptibility measured by electron spin resonance (ESR) points to conducting behaviors for this phase and opens the way for the realization of superconducting fulleride compositions at stoichiometries other than A{sub 3}C{sub 60}. 16 refs., 1 fig., 1 tab.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 91267
- Journal Information:
- Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 28 Vol. 117; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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