Magnetic-field induced Bose-Einstein condensation of magnons and critical behavior in interacting spin dimer system TlCuCl3
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- Yamada Fumiko
- Department of Physics, Tokyo Institute of Technology
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- Ono Toshio
- Department of Physics, Tokyo Institute of Technology
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- Tanaka Hidekazu
- Department of Physics, Tokyo Institute of Technology
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- Misguich Grégoire
- Service de Physique Théorique, CEA-Saclay
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- Oshikawa Masaki
- Institute for Solid State Physics, The University of Tokyo
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- Sakakibara Toshiro
- Institute for Solid State Physics, The University of Tokyo
書誌事項
- タイトル別名
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- Magnetic-Field Induced Bose–Einstein Condensation of Magnons and Critical Behavior in Interacting Spin Dimer System TlCuCl<SUB>3</SUB>
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Magnetization measurements were performed to investigate the critical behavior of the field-induced magnetic ordering in gapped spin system TlCuCl3. The critical density of the magnons was obtained as a function of temperature and the magnon-magnon interaction constant was evaluated. The experimental phase boundary for T<5 K agrees almost perfectly with the magnon Bose–Einstein condensation (BEC) theory based on the Hartree–Fock approximation with realistic dispersion relations. The phase boundary can be described by the power law [HN(T)−Hc]∝Tφ. With decreasing fitting temperature range, the critical exponent φ decreases and converges at φBEC=3⁄2 predicted by the magnon BEC theory.
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 77 (1), 013701-013701, 2008
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
- 1390282679173760128
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- NII論文ID
- 130005436132
- 110006594891
- 210000107046
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 9330946
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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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- JaLC
- NDL
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