Abstract
Superconductivity (SC) and long-range ferromagnetism (FM) are mutually antagonistic, thus in general SC does not coexist with FM. In this mini-review, however, we will show that such a coexistence can inhabit several iron pnictide systems, including EuFe2(As1−xPx)2, Eu(Fe1−xCox)2As2, Eu(Fe1−xRux)2As2, CeFe(As1−xPx)O0.95F0.05 and Sr2VFeAsO3. We will briefly discuss the possible reasons and consequences of the coexistence of 3d-electron SC and 4f-electron FM.
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