Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba3NiSb2O9
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概要
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We report the results of magnetization and specific heat measurements on Ba3NiSb2O9, which is a quasi-two-dimensional spin-1 triangular-lattice antiferromagnet. We observed a nonclassical magnetization plateau at one-third of the saturation magnetization that is driven by spin frustration and quantum fluctuation. Exact diagonalization for a 21-site rhombic cluster was performed to analyze the magnetization process. Experimental and calculated results agree well.
- 2011-09-15
著者
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Kindo Koichi
Institute For Solid State Physics The University Of Tokyo
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Ono Toshio
Department Of Oral Biochemistry Nagasaki University School Of Dentistry
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Nakano Hiroki
Graduate School And Faculty Of Science Himeji Institute Of Technology
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Matsuo Akira
Institute For Chemical Research Kyoto University
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Tanaka Hidekazu
Department Of Chemistry And Chemical Biology Gunma University
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Matsuo Akira
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Shirata Yutaka
Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
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