MAGNONE , Edoardo

All the high-Tc oxide superconducors known to date are copper-based oxides (cuprates) in the layered perovskite crystalstructures that contain a planar network of copper and oxygen (CuO2 plane). In searching for possible new superconducting metaloxides without Cu ions, we have examined the layered tetragonalpnictides M4Pn2O (M¼ Ca, Sr, Ba and...

The intermetallic perovskite MgCNi3, superconducting with a Tc of 8 K, is particularly interesting from several points of view: in spite of the large amount of nickel present the compound is not ferromagnetic; nevertheless band structure calculations put in evidence a Van Hove singularity just above the Fermi level suggesting that MgCNi3 is on...

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