Field-Induced Phase Transitions Driven by Quantum Fluctuation in S=1/2 Anisotropic Triangular Antiferromagnet Cs_2CuBr_4(Field-Induced Magnetic Ordering, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
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概要
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The field induced magnetic phase transitions of Cs_2CuBr_4 were investigated by means of magnetization process and neutron scattering experiments. Cs_2CuBr_4 should be characterized as S=1/2 two-dimensional triangular antiferromagnet. Below the ordering temperature T_N=1.4K, the spin structure is the helical incommensurate structure almost within the triangular lattice plane. In the field direction within the triangular lattice plane, Cs_2CuBr_4 exhibits the magnetization plateaux at one-third and two-thirds of the saturation magnetization. The spin structure in the one-third plateau phase is found to be almost collinear up-up-down structure which should be stabilized by quantum fluctuation as predicted by the theoretical studies.
- 理論物理学刊行会の論文
- 2005-10-31
著者
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Kindo K
Advanced Science Research Center Japan Atomic Energy Agency
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GOTO Tsuneaki
Institute for Solid State Physics,University of Tokyo
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KAKURAI Kazuhisa
Advanced Science Research Center, Japan Atomic Energy Research Institute (JAERI)
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TANAKA Hidekazu
Research Center for Low Temperature Physics, Tokyo Institute of Technology
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NAKAJIMA Kenji
Neutron Scattering Laboratory,Institute for Solid State Physics,The University of Tokyo
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ONO Toshio
Department of Physics, Tokyo Institute of Technology
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Kindo Koichi
Research Center For Materials Science At Extreme Conditions Osaka University
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Kindo K
Kyokugen Osaka University
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Kodama Katsuaki
Department Of Physics Division Of Material Science Nagoya University
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Kolomiyets O.
Institute For Solid State Physics The University Of Tokyo
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Goto T
Institute For Materials Research Tohoku University
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KOIKE Yoshihiro
Advanced Science Reseach Center, Japan Atomic Energy Reserach Institute
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Hiraoka T
Faculty Of Integrated Arts And Science Hiroshima University
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ISHIKAWA Fumihiro
Institute for Solid State Physics, University of Tokyo
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Kosuge Koji
Department Of Chemistry Graduate School Of Science Kyoto University
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MITAMURA Hiroyuki
Institute for Solid State Physics, University of Tokyo
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Goto Tetsuya
Plasma Research Center University Of Tsukuba
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Gotoh Takayuki
Institute For Materials Research Tohoku University
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Goto Takayuki
Department Of Physics Faculty Of Science University Of Tokyo
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Klenke J.
Hahn-Meitner-Institute
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Meissner M.
Hahn-Meitner-Institute
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Mitamura H
Institute For Solid State Physics The University Of Tokyo
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OOSAWA Akira
Advanced Scientific Research Center, Japan Atomic Energy Research Institute
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SMEIBIDLE P.
Hahn-Meitner-Institut
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COLDEA R.
Oxford Physics, Clarendon Laboratory
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TENNANT A.
School of Physics & Astronomy, University of St Andrews
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OLLIVIER J.
Institut Laue-Langevin
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Coldea R.
Oxford Physics Clarendon Laboratory
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Goto T
Nagoya Inst. Technol. Nagoya Jpn
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Goto Takao
Graduate School Of Human And Environmental Studies Kyoto University
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Goto T
Graduate School Of Human And Environmental Studies Kyoto University
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Ishikawa F
Institute For Solid State Physics The University Of Tokyo
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Kakurai Kazuhisa
Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo
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Kakurai Kazuhisa
Advanced Science Research Center Japan Atomic Energy Research Institute
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Tennant A.
School Of Physics & Astronomy University Of St Andrews:(present Address)hahn-meitner-institut
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Goto T
Institute For Solid State Physics University Of Tokyo
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Goto Tsuneaki
Institute For Solid State Physics The University Of Tokyo
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Goto T
Univ. Tokyo Tokyo Jpn
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Goto T
Univ. Tokyo Chiba
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Goto Tsuneaki
Institute For Solid State Physics University
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Klenke J.
Hahn-meitner-institut
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Mitamura Hiroyuki
Institute For Solid State Physics (issp) University Of Tokyo
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Oosawa Akira
Advanced Science Research Center Japan Atomic Energy Research Institute
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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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Meissner M.
Hahn-meitner-institut
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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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Goto T
Institute For Solid State Physics The University Of Tokyo
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Goko T
Institute For Solid State Physics University Of Tokyo
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Koga K
Department Of Superconductivity University Of Tokyo
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Goto Tsuneaki
The Institute Of Solid State Physics Tokyo University
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Goto Takao
Graduate School Fo Human And Environmental Studies Kyoto University
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Nakajima K
Japan Atomic Energy Agency
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Nakajima K
National Inst. Biosci. And Human‐technol. Ibaraki Jpn
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Ohsawa A
Department Of Physics Sophia University
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Ishikawa Fumihiro
Institute For Solid State Physics The University Of Tokyo
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Nakajima Kenji
Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo
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Goto T
新潟大院自然
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Tanaka Hidekazu
Research Center For Low Temperature Physics Tokyo Institute Of Technology
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KAKURAI Kazuhisa
Advanced Scientific Research Center, Japan Atomic Energy Research Institute
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KOIKE Yoshihiro
Advanced Scientific Research Center, Japan Atomic Energy Research Institute
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NAKAJIMA Kenji
Neutron Scattering Laboratory, Institute for Solid State Physics, The University of Tokyo
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ISHIKAWA Fumihiro
Institute for Solid State Physics, The University of Tokyo
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MITAMURA Hiroyuki
Institute for Solid State Physics, The University of Tokyo
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TENNANT A.
School of Physics & Astronomy, University of St Andrews:(Present address)Hahn-Meitner-Institut
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