Theory of Field-Induced Phase Transition in PrOs_4Sb_<12> (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We propose a theory of the field-induced ordered state in PrOs_4Sb_<12>. It is based on an antiferro-quadrupolar (AFQ) interaction in the low-lying singlet-triplet subspace. Using a pseudo-spin description, we clarify a hidden symmetry in the local Hamiltonian and its relation with possible order parameters. Stable AFQ phases are determined for the direction of magnetic fields, and the effect of T_h symmetry on the anisotropic phase diagram is discussed.
- 社団法人日本物理学会の論文
- 2004-03-15
著者
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椎名 亮輔
Department Of Physics Tokyo Metropolitan University
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SHIINA Ryousuke
Department of Physics, Tokyo Metropolitan University
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AOKI Yuji
Department of Physics, Tokyo Metropolitan University
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Shiina Ryousuke
Department Of Physics Tokyo Metropolitan University
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Shina Ryousuke
Max-planck-institut Fur Chemische Rhysik Fester Stoffe:department Of Physics Tokyo Institute Of Tech
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Aoki Yuji
Department Of Physics Tokyo Metropolitan University
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Aoki Yuji
Department Of Chemistry Faculty Of Science Gakushuin University
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Shiina Ryousuke
Department Of Physics Faculty Of Science Science University Of Tokyo
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Shiina Ryousuke
Department of Materials Science and Technology, Niigata University, Niigata 950-2181, Japan
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