We are studying normal-state and superconducting properties of hyper-expanded A3C60 (A = K, Rb, Cs). We have shown that these materials resemble unconventional superconductors like cuprates. Intense research of normal-state and superconducting properties of these materials close to the metal-to-insulator transition is in progress. A.Y. Ganin, et al. Nature 2010.

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