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Magnetic and superconducting properties of CeRhGe$$_2$$ and CePtSi$$_2$$

Hirose, Yusuke*; Nishimura, Naoto*; Honda, Fuminori*; Sugiyama, Kiyohiro*; Hagiwara, Masayuki*; Kindo, Koichi*; Takeuchi, Tetsuya*; Yamamoto, Etsuji; Haga, Yoshinori; Matsuura, Masato*; Hirota, Kazuma*; Yasui, Akira; Yamagami, Hiroshi; Settai, Rikio*; Onuki, Yoshichika

Magnetic and superconducting properties of CeRhGe$$_2$$ and CePtSI$$_2$$ have been investigated by bulk property measurements and neutron scattering experiments. CeRhGe$$_2$$ was found to order antiferromagnetically with an ordered moment 1.3 $$mu_{rm B}$$/Ce along the $$c$$-axis of the orthorhombic unit cell. High pressure resistivity measurements revealed a suppression of the antiferromagnetic transition with increasing pressure and the occurrence of superconductivity near the critical pressure where antiferromagnetism vanishes. Quantum-critical characteristics are expected to these compounds.

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Category:Physics, Multidisciplinary

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