Pressure-Induced Quantum Phase Transitions in TlCuCl_3 and KCuCl_3(Impurity and Pressure Effects, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
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概要
- 論文の詳細を見る
Magnetization measurements under hydrostatic pressure were performed on S=1/2 coupled dimer systems TlCuCl_3 and KCuCl_3 under magnetic field H parallel to the [2, 0, 1] direction. With increasing applied pressure P, the gap in TlCuCl_3 decreases and closes completely at P_c=0.42±0.05 kbar. TlCuCl_3 undergoes pressure-induced quantum phase transition. The gap and Neel temperature are presented as functions of pressure. KCuCl_3 also undergoes pressure-induced quantum phase transition at P_c〜8.8kbar. Pressure dependence of intra- and interdimer interactions in KCuCl_3 are presented.
- 理論物理学刊行会の論文
- 2005-10-31
著者
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TANAKA Hidekazu
Research Center for Low Temperature Physics, Tokyo Institute of Technology
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ONO Toshio
Department of Physics, Tokyo Institute of Technology
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UWATOKO Yoshiya
Institute for Solid State Physics, The University of Tokyo
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Hiraoka T
Faculty Of Integrated Arts And Science Hiroshima University
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Ueda Yutaka
Sumitomo Pharmaceuticals Research Division
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GOTO Kenji
Quantum Beam Science Directorate, Japan Atomic Energy Agency
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Goto Kenji
Department Of Cardiology Matsue Red Cross Hospital
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Goto Kenji
Quantum Beam Science Directorate Japan Atomic Energy Agency
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Ono T
Department Of Physics Tokyo Institute Of Technology
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Ono Toshio
Department Of Oral Biochemistry Nagasaki University School Of Dentistry
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Uwatoko Y
Institute For Solid State Physics The University Of Tokyo
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Uwatoko Y
Faculty Of Integrated Arts And Sciences Hiroshima University:faculty Of General Education Kumamoto U
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Takei Humihiko
Institute For Iron Steel And Other Metals Tohoku University
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Hiraoka T
Faculty Of Science And Engineering Saga University
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Uwatoko Yoshiya
Institute For Solid State Physics (issp) The University Of Tokyo
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Goto Kenji
Department Of Anesthesiology And Resuscitology Okayama University Medical School
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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
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Uwatoko Yoshiya
Dainippon Sumitomo Pharma Co., Ltd., Pharmacology Research Laboratories
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