High-Field Magnetic Torque Measurement in the Spin Gap System (CH_3)_2CHNH_3CuCl_3(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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High-field magnetic torque measurement was carried out in the spin gap system (CH_3)_2CHNH_3CuCl_3. It was observed that the magnitude of the magnetic torque τ is almost zero until the critical field and then increases rapidly, which indicates the existence of magnetic quantum phase transition from the spin-gap phase to the field-induced magnetic ordered phase. From the temperature dependence of τ, a cusplike minimum indicative of the Bose-Einstein condensation (BEC) of magnons was observed for H⊥C-plane, while a kink anomaly was observed for H⊥A-plane at the field-induced transition temperature. It was found that this difference in behavior between H⊥A-plane and H⊥C-plane can be interpreted as the breaking of the magnon BEC picture due to a rotational symmetry breaking. An additional anomaly was also observed in the field-induced magnetic ordered phase at the intermediate angle of the applied magnetic field in the A-plane and discussed in terms of spin-flop transition, spin-reorientation transition, and spin-lattice correlations. In order to investigate spin-lattice correlations in (CH_3)_2CHNH_3CuCl_3, we performed magnetostriction measurement and observed that magnetostriction appears with the disappearance of the spin gap.
- 社団法人日本物理学会の論文
- 2007-08-15
著者
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Kobayashi Norio
Institute For Materials Research Tohoku University
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Watanabe K
Institute For Materials Research Tohoku University
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Sasaki Takahiko
Institute for Materials Research, Tohoku University
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小島 憲道
東大総合文化
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WATANABE Kazuo
Institute for Materials Research, Tohoku University
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黒田 規敬
熊本大学大学院
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小島 憲道
Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
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Awaji S
Institute For Materials Research Tohoku University
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佐藤 知矢
Department Of Physics Faculty Of Science Shinshu University
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AWAJI Satoshi
Institute for Materials Research, Tohoku University
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Suzuki Takao
Advanced Meson Science Laboratory Riken Nishina Center
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Watanabe K
Tohoku Univ. Sendai Jpn
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Awaji Satoshi
Tohoku Univ. Sendai Jpn
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Awaji Satoshi
Institute For Materials Research Tohoku University
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Goto Takayuki
Department Of Physics Sophia University
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OOSAWA Akira
Department of Physics, Sophia University
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Kuroda Noritaka
Discovery Research Laboratories V Discovery Research Division Takeda Chemical Industries Ltd.
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Kuroda Noritaka
Institute For Materials Science Tohoku University
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Oosawa Akira
Department Of Physics Sophia University
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WATAZAWA Keiichi
Sumitomo Heavy Industries Ltd.
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Noto K
Institute For Materials Research Tohoku University
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Goto Takayuki
Department Of Physics Faculty Of Science And Technology Sophia University
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Kojima N
Graduate School Of Arts And Sciences University Of Tokyo
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Kojima Norimichi
Graduate School Of Arts And Science University Of Tokyo
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SAITO Takehiro
Department of Physics, Sophia University
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Watanabe K
National Institute For Fusion Science
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Watanabe Kazuo
Institute For Materials Research Tohoku University
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Watanabe Kazuto
Safety Assessment Department Chugai Pharmaceutical Co. Ltd.
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KOBAYASHI Norio
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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Sasaki Takahiko
Institute For Materials Research Tohoku University
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Suzuki Takao
Advanced Meson Science Laboratory Nishina Center Riken
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Kuroda N
Nec Corp. Ibaraki Jpn
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Saito Takehiro
Department Of Physics Faculty Of Science And Technology Sophia University
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WATANABE Kenji
Engineering Mathematics, School of Engineering, Okayama University
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Kobayashi Norio
Institute For Materials Recearch Tohoku University
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Watanabe Kazuo
Institute For Materials Research Tohoku University Crest Japan Science And Technology Corporation
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Kobayashi Norio
Faculty Of Engineering Iwate University
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Oosawa Akira.
Department of Physics, Sophia University
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Goto Takayuki.
Department of Physics, Sophia University
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Awaji Satoshi.
Institute for Materials Research, Tohoku University
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Watanabe Kazuo.
Institute for Materials Research, Tohoku University
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Kobayashi Norio.
Institute for Materials Research, Tohoku University
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Goto Takayuki
Department of Physics, Faculty of Science and Technology, Sophia University
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OOSAWA Akira
Advanced Science Research Center, Japan Atomic Energy Research Institute
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Watanabe Kenji
High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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Suzuki Takao
Advanced Meson Science Laboratory, RIKEN Nishina Center
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Awaji Satoshi
High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
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AWAJI Satoshi
Institute for Matererials Research, Tohoku University
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KURODA Noritaka
Research Institute for Iron, Steel and Other Metals Tohoku University : Tohoku University : Physics Department, Purdue University
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WATANABE Kazuo
Institute for Matererials Research, Tohoku University
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Sasaki Takahiko
Institute for Materials Reseach, Tohoku University, 2-1-1 Katahira-cho, Aoba-ku, Sendai 980-8577, Japan
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小島 憲道
東大院総合
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