Prediction that Cm2−Th Sr2Cu2NbO and Gd2−Ce Sr2Cu2TiO will superconduct

Abstract

Properly fabricated and doped Cm2−zThzSr2Cu2NbOx and homologues of Gd2−zCezSr2Cu2TiOx, both with x ≈ 10, are predicted to superconduct, based on the charge-reservoir oxygen model of high-temperature superconductivity. In cuprate-plane models, (i) since neither CmBa2Cu3O7 nor Cm2−zThzCuO4 superconducts, Cm2−zThzSr2Cu2NbOx is not expected to superconduct; and (ii) Gd2−zCezSr2Cu2TiOx is expected not to superconduct since a similar compound, Nd2CeSr2Cu2TiOx, did not.