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arXiv · 1605.09007

A New Ferromagnetic Superconductor: CsEuFe$_4$As$_4$

Yi Liu·Ya-Bin Liu·Qian Chen·Zhang-Tu Tang·Wen-He Jiao·Qian Tao·Zhu-An Xu·Guang-Han Cao
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Abstract

Superconductivity (SC) and ferromagnetism (FM) are in general antagonistic, which makes their coexistence very rare. Following our recent discovery of robust coexistence of SC and FM in RbEuFe$_4$As$_4$ [Y. Liu et al., arXiv: 1605.04396 (2016)], here we report another example of such a coexistence in its sister compound CsEuFe$_4$As$_4$, synthesized for the first time. The new material exhibits bulk SC at 35.2 K and Eu$^{2+}$-spin ferromagnetic ordering at 15.5 K, demonstrating that it is a new robust ferromagnetic superconductor.

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Yi Liu, Ya-Bin Liu, Qian Chen, Zhang-Tu Tang, Wen-He Jiao, Qian Tao, Zhu-An Xu, Guang-Han Cao. 2016-05-29. A New Ferromagnetic Superconductor: CsEuFe$_4$As$_4$. https://doi.org/10.1007/s11434-016-1139-2

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