Competition between Fe-based superconductivity and antiferromagnetism of Eu2+ in Eu1-xCaxFe2As2

A. Mitsuda, S. Seike, T. Matoba, H. Wada, F. Ishikawa, Y. Yamada

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8 Citations (Scopus)


Single crystals of Eu1-xCaxFe2As 2 (x 0.25, 0.50 and 0.75) are prepared. With increasing x, the Néel temperature of Eu2+ decreases and disappears at x = 0.75, whereas the spin density wave (SDW) transition temperature, TSDW, is almost unchanged. For x = 0.50, the pressure-induced superconductivity emerges below 20 K and the superconductivity is slightly suppressed by the antiferromagnetic order (AFM) of Eu2+. Compared with EuFe 2As2, for x = 0.50, the superconductivity seems to overcome the AFM, which is ascribed to the weaker AFM (or lower TN) of Eu2+.

Original languageEnglish
Article number012100
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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