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

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

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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
Volume273
Issue number1
DOIs
Publication statusPublished - Jan 1 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Competition between Fe-based superconductivity and antiferromagnetism of Eu<sup>2+</sup> in Eu<sub>1-x</sub>Ca<sub>x</sub>Fe<sub>2</sub>As<sub>2</sub>'. Together they form a unique fingerprint.

Cite this