18 research outputs found
Substitution for Cu in the electron-doped infinite-layer superconductor Sr0.9La0.1CuO2, Ni reduces Tc much faster than Zn
We report on the effect of substitution for Cu on Tc of electron-doped
infinite-layer superconductors Sr0.9La0.1Cu1-xRxO2, R = Zn and Ni. We found
that Tc was nearly constant until x = 0.03 for R = Zn, while superconductivity
was nearly suppressed for x = 0.02 with dTc/dx = 20 K/% for R = Ni. This
behavior is very similar to that of conventional superconductors. These
findings are discussed in terms of the superconducting gap symmetry in the
cuprate superconductors including another electron-doped superconductor,
(Nd,Ce)2CuO4-y.Comment: 5 pages and 2 EPS figures, [email protected] for material reques