Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$

Taichi Terashima; Hiroyuki S. Suzuki; Megumi Tomita; Motoi Kimata; Hidetaka Satsukawa; Atsushi Harada; Kaori Hazama; Takehiko Matsumoto; Keizo Murata; Shinya Uji

doi:10.1016/j.physc.2009.10.064

Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$

Superconductivity 2015-05-13 v1

Authors: Taichi Terashima , Hiroyuki S. Suzuki , Megumi Tomita , Motoi Kimata , Hidetaka Satsukawa , Atsushi Harada , Kaori Hazama , Takehiko Matsumoto , Keizo Murata , Shinya Uji

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Abstract

We present the magnetic and superconducting phase diagram of EuFe $_2$ As $_2$ for $B \parallel c$ and $B \parallel ab$ . The antiferromagnetic phase of the Eu $^{2+}$ moments is completely enclosed in the superconducting phase. The upper critical field vs. temperature curves exhibit strong concave curvatures, which can be explained by the Jaccarino-Peter compensation effect due to the antiferromagnetic exchange interaction between the Eu $^{2+}$ moments and conduction electrons.

Keywords

magnetic phase transitions iron-based superconductor superconductivity

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@article{arxiv.0908.2280,
  title  = {Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$},
  author = {Taichi Terashima and Hiroyuki S. Suzuki and Megumi Tomita and Motoi Kimata and Hidetaka Satsukawa and Atsushi Harada and Kaori Hazama and Takehiko Matsumoto and Keizo Murata and Shinya Uji},
  journal= {arXiv preprint arXiv:0908.2280},
  year   = {2015}
}

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submitted to the proceedings of the M2S-IX Tokyo

Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$

Abstract

Keywords

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