Drastic suppression of the superconductivity of LaFeAsO0.85 by a nonmagnetic impurity

Details Drastic suppression of the superconductivity of LaFeAsO0.85 by a nonmagnetic impurity Drastic suppression of the superconductivity of LaFeAsO0.85 by a nonmagnetic impurity

2009-11-16

arxiv.org/abs/0911.2975v1

Physics

Condensed Matter

Superconductivity

13 pages, 4 figures

Scientific paper

We observed a drastic Tc suppression caused by no more than 3 at.% of Zn doped to the optimized superconductor LaFeAsO0.85 (Tc = 26 K). The electrical resistivity and magnetic susceptibility measurements suggested that it is likely due to impurity scatterings rather than losing the metallic nature, seeming to support the s+/- pairing model proposed for the Fe pnictide superconductor.

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