Evidence for Appearance of an Internal Field in the Ordered State of CeRu2Al10 by $\mu^{+}$SR
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概要
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We report zero-field $\mu^{+}$SR measurements made at J-PARC on CeRu2Al10. Below the phase transition temperature $T_{0}\sim 27$ K, a clear modulation of $\mu^{+}$ polarization due to an internal field is observed, indicating that magnetic ordering takes place. Compared with the internal field expected from the effective magnetic moment in the disordered state, the observed internal field at the $\mu^{+}$ site is quite small. This indicates that the ordered Ce magnetic moment is small (${\sim}10^{-2}\mu_{\text{B}}$) and/or the nearest pair of Ce magnetic moments are mutually anti-parallel. The $T$-dependence of the internal field is somewhat peculiar, suggesting that another ordering is taking place as well.
- Physical Society of Japanの論文
- 2010-05-15
著者
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ITO Takashi
Advanced Science Research Center, Japan Atomic Energy Agency
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Higemoto Wataru
Advanced Science Research Center Japan Atomic Energy Agency
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Chudo Hiroyuki
Advanced Science Research Center Japan Atomic Energy Agency
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Ninomiya Kazuhiko
Advanced Science Research Center Japan Atomic Energy Agency
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Takesaka Tomoaki
Graduate School of Integrated Arts and Science, Kochi University, Kochi 780-8520, Japan
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Nishioka Takashi
Graduate School of Integrated Arts and Science, Kochi University, Kochi 780-8520, Japan
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Kambe Shinsaku
Advance Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Tokunaga Yo
Advance Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Sakai Hironori
Advance Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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KOYAMA Takehide
Graduate School of Material Science, University of Hyogo
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Koyama Takehide
Graduate School of Material Science, University of Hyogo, Kamigori, Hyogo 678-1297, Japan
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Ninomiya Kazuhiko
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Miyake Yasuhiro
Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
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Chudo Hiroyuki
Advance Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Ito Takashi
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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