1. Substitution effects in the Iron-Silicide Superconductor Lu2Fe3Si5
- Author
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J. Koshio, K. Takase, Tadataka Watanabe, Yoshihiko Takano, and H. Okuyama
- Subjects
Superconductivity ,History ,Materials science ,Condensed matter physics ,Mixed crystal ,Substitution (logic) ,Electron ,Computer Science Applications ,Education ,Crystallography ,chemistry.chemical_compound ,chemistry ,Silicide ,Curie - Abstract
We studied effects of Fe-site substitutions on superconductivity in the iron silicide Lu2Fe3Si5 by investigating electric and magnetic properties of the mixed crystal Lu2(Fe1−xMx)3Si5 (M = Mn, Co and Ru). The Mn and Co substitutions induce Curie tails in temperature dependence of magnetic susceptibilities indicating the enhancement of the localized character of 3d electrons. The Ru substitution reveals the disorder-sensitive superconductivity, suggesting the sign-reversed superconducting gap function in Lu2Fe3Si5.
- Published
- 2012