Pressure-Induced Antiferromagnetic Bulk Superconductor EuFe$_2$As$_2$
| Autor: | Terashima, Taichi, Suzuki, Hiroyuki S., Tomita, Megumi, Kimata, Motoi, Satsukawa, Hidetaka, Harada, Atsushi, Hazama, Kaori, Matsumoto, Takehiko, Murata, Keizo, Uji, Shinya |
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| Rok vydání: | 2009 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physc.2009.10.064 |
| Popis: | 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. Comment: submitted to the proceedings of the M2S-IX Tokyo |
| Databáze: | arXiv |
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