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Single-crystal neutron diffraction study of the heavy-electron superconductor CeNiGe$$_{3}$$

Ikeda, Yoichi*; Ueta, Daichi*; Yoshizawa, Hideki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi  

Single-crystal neutron diffraction study was performed for anomalous antiferromagnetic ordering in a heavy-electron superconductor CeNiGe$$_{3}$$. We observed incommensurate magnetic Bragg reflections characterized with the propagation vector of $$k_{2}$$ = (0; 0:41; 1=2) below the N$'e$el temperature of 5 K, while there is no significant magnetic reflection at the commensurate propagation vector of $$k_{1}$$ = (1; 0; 0) at which another magnetic reflection was observed in the previous neutron diffraction study with a polycrystalline sample. From the single crystal study, we suggest that the magnetic phase of CeNiGe$$_{3}$$ at ambient pressure is characterized only by the incommensurate propagation vector $$k_{2}$$.

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Category:Physics, Multidisciplinary

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