Pressure-induced Magnetic Quantum Phase Transition from Gapped Ground State in TlCuCl<sub>3</sub>
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- Goto Kenji
- Department of Physics, Tokyo Institute of Technology
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- Fujisawa Masashi
- 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
- Research Center for Low Temperature Physics, Tokyo Institute of Technology
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- Uwatoko Yoshiya
- Institute for Solid State Physics, The University of Tokyo
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- タイトル別名
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- Pressure-induced Magnetic Quantum Phase Transition from Gapped Ground State in TlCuCl3
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Magnetization measurements under hydrostatic pressure were performed on an S=1⁄2 coupled spin dimer system TlCuCl3 with a gapped ground state under magnetic field H parallel to the [201] direction. With increasing applied pressure P, the gap decreases and closes completely at Pc=0.42±0.05 kbar. For P>Pc, TlCuCl3 undergoes antiferromagnetic ordering. A spin-flop transition was observed at Hsf\\simeq0.7 T. The spin-flop field is approximately independent of pressure, although the sublattice magnetization increases with pressure. The gap and Néel temperature are presented as functions of pressure. The occurrence of the pressure-induced quantum phase transition is attributed to the relative enhancement of the interdimer exchange interactions compared with the intradimer exchange interaction.
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 73 (12), 3254-3257, 2004
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
- 1390001204188438656
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- NII論文ID
- 210000105185
- 110001979290
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.3254G
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7185863
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- 本文言語コード
- en
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- NDL
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