Microscopic Investigation of Possible Multipole Ordering in SmRu_4P_<12> by ^<31>P-NMR(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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To elucidate microscopically the metal-insulator transition (T_<MI>〜16.5 K) and an additional transition (T^*〜15 K) in Sm-based filled skutterudite compound SmRu_4P_<12>, we have carried out ^<31>P-NMR (nuclear magnetic resonance) at various fields from 0.8 to 11 T. The peaks in the spin lattice relaxation rate 1/T_1 observed at T_<MI> and T^* under 〜7 T indicate that there are different magnetic fluctuation modes in SmRu_4P_<12>: one freezes below T_<MI> and the other does below T^*. The anomalous field and temperature dependences of the NMR spectrum are explained in terms of the occurrence of multipole ordering. We have examined the two possible scenarios to account for the experimental results, and both cases suggest that the M-I transition involves octapole ordering.
- 社団法人日本物理学会の論文
- 2006-05-15
著者
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WADA Shinji
Department of Physics, Graduate School of Science, Kobe University
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Wada Shinji
Graduate School Of Sciences Kobe University
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Wada Shinji
Department Of Material Science Graduate School Of Science And Technology Kobe University:department
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Miki Takeshi
Graduate School Of Sciences Kobe University:(present Office)graduate School Of Material Science Univ
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TAKEDA Naoya
Institute for Solid State Physics, University of Tokyo
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MIKI Takashi
Kobe Steel Ltd.
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MASAKI Satoru
Department of Physics, Faculty of Science, Kobe University
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MITO Takeshi
Department of Physics, Faculty of Science, Kobe University
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Mito Takeshi
Department Of Physics Faculty Of Science Kobe University
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Mito Takeshi
Department Of Material Science Graduate School Of Science And Technology And Department Of Physics F
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Masaki Satoru
Department Of Physics Faculty Of Science Kobe University
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Miki Takashi
Graduate School Of Sciences Kobe University:(present Office)graduate School Of Material Science Univ
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Wada Shinji
Department Of Physics Faculty Of Science Kobe University
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Takeda Naoya
Institute For Solid State Physics University Of Tohyo
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OKI Naomi
Department of Physics, Faculty of Science, Kobe University
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Wada Shinji
Department Of Material Science Graduate School Of Science & Technology Kobe University
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Oki Naomi
Department Of Physics Faculty Of Science Kobe University
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WADA Shinji
Department of Physics, Faculty of Science, Kobe University
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