Effect of antiferro-quadrupole fluctuations on thermodynamic quantities in PrOs4Sb12
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- Kusunose Hiroaki
- Department of Physics, Ehime University
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- Matsumoto Masashige
- Department of Physics, Faculty of Science, Shizuoka University
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- Koga Mikito
- Department of Physics, Faculty of Education, Shizuoka University
書誌事項
- タイトル別名
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- Effect of Antiferro-Quadrupole Fluctuations on Thermodynamic Quantities in PrOs<SUB>4</SUB>Sb<SUB>12</SUB>
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説明
Field-oriented anisotropy of specific heat and magnetization in PrOs4Sb12 is discussed on the basis of the generalized Holstein–Primakoff formalism under magnetic fields. With a moderate amount of the mixing parameter characterizing Th symmetry, we obtain distinct anisotropy of the specific heat due to fluctuations for H||[100] and H||[110] both in the para and the antiferro-quadrupole phases. Tendency of the anisotropy in the specific heat is consistent with the experimental results, while the calculated anisotropy of the magnetization in the para phase is opposite to that observed in the experiment. Although the magnetic field usually suppresses fluctuations due to level splitting, the presence of the critical soft modes in the exciton dispersion contributes significantly to thermodynamic quantities in antiferro-quadrupole systems.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 78 (9), 094713-094713, 2009
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204197218048
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- NII論文ID
- 130005437926
- 210000107995
- 40016740535
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 10358530
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- 本文言語コード
- en
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- データソース種別
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