Pressure-induced superconductivity in non-centrosymmetric compound CeIrGe₃

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• 作者：Fuminori Honda ; Ismardo Bonalde ; Shingo Yoshiuchi ; Yusuke Hirose ; Taichi Nakamura ; Katsuya Shimizu ; Rikio Settai ; Yoshichika Ō ; nuki
• 关键词：CeIrGe₃ ; Non-centrosymmetric compound ; Pressure-induced superconductivity ; Heavy fermion
• 刊名：Physica C
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：470
• 期：Supplement 1
• 页码：S543-S544
• 全文大小：395 K

文摘

We have carried out electrical resistivity experiments on the non-centrosymmetric compound CeIrGe₃ under high pressures up to 24 GPa. CeIrGe₃ is an antiferromagnet with the Néel temperature and a successive magnetic transition at at ambient pressure. With increasing pressure, T_N1 and T_N2 merge around 3 GPa, becomes unchanged up to 10 GPa, and indicates a step-like decrease up to 20 GPa. Further increasing pressure, we have found superconductivity above 20 GPa with a transition temperature of 1.6 K at 24 GPa. The upper critical field for the magnetic field along the tetragonal [0 0 1] direction is expected to be much larger than 15 T.