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arxiv: cond-mat/0106441 · v2 · pith:B5JSUTXD · submitted 2001-06-21 · cond-mat.supr-con

Substitution for Cu in the electron-doped infinite-layer superconductor Sr0.9La0.1CuO2, Ni reduces Tc much faster than Zn

C. U. Jung , J. Y. Kim , Min-Seok Park , Hun-Jeong Kim , Mun-Seog Kim , Sung-Ik Lee This is my paper

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classification cond-mat.supr-con
keywords electron-dopedsuperconductorsinfinite-layernearlysubstitutionsuperconductoranotherbehavior
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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.

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