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Impurity Effects on the Superconducting Transition Temperature of NazCoO2.yH2O

M. Yokoi·H. Watanabe·Y. Mori·T. Moyoshi·Y. Kobayashi·M. Sato
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Abstract

Superconducting transition temperature Tc of NazCo1-xMxO2.yH2O has been studied for M=Ir and Ga, which can substitute for Co. It has been found that Tc is suppressed by the M-atom doping. The decreasing rates |dTc/dx| are of the order of 1 K/% and too small to be explained by the pair breaking mechanism for the anisotropic order parameters by non-magnetic impurities. Brief arguments are given on possible origins of the Tc suppression.

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M. Yokoi, H. Watanabe, Y. Mori, T. Moyoshi, Y. Kobayashi, M. Sato. 2003-12-10. Impurity Effects on the Superconducting Transition Temperature of NazCoO2.yH2O. https://doi.org/10.1143/jpsj.73.1297

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