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

Authors :: Guo, Y. F.
Shi, Y. G.
Yu, S.
Belik, A. A.
Matsushita, Y.
Tanaka, M.
Katsuya, Y.
Kobayashi, K.
Nowik, I.
Felner, I.
Awana, V. P. S.
Yamaura, K.
Takayama-Muromachi, E.
Publication Year :: 2009
Abstract: 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.<br />Comment: 13 pages, 4 figures

Subjects :: Condensed Matter - Superconductivity
Condensed Matter - Strongly Correlated Electrons

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