Anomalous Metal-Insulator Transition in Filled Skutterudite CeOs_4Sb_<12>
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概要
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Copyright(c)2006 The Physical Society of JapanAnomalous metal-insulator transition observed in filled skutterudite CeOs4Sb12 is investigated by constructing the effective tight-binding model with the Coulomb repulsion between f electrons. By using the mean field approximation, magnetic susceptibilities are calculated and the phase diagram is obtained. When the band structure has a semimetallic character with small electron and hole pockets at г and H points, a spin density wave transition with an ordering vector Q = (1, 0, 0) occurs due to the nesting property of the Fermi surfaces. Magnetic field enhances this phase in accord with the experiments.
- 社団法人日本物理学会の論文
- 2006-03-15
著者
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Saso Tetsuro
Saitama Univ. Saitama
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Saso Tetsuro
Department Of Physics Faculty Of Science Saitama University
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Imai Yoshiki
Saitama Univ. Saitama
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Imai Yoshiki
Department Of Applied Physics Osaka University
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SAKURAZAWA Keitaro
Department of Physics, Saitama University
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Sakurazawa Keitaro
Department Of Physics Saitama University
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