Ground-State Properties of Alternating-Spin XXZ Chains
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概要
- 論文の詳細を見る
Ground-state properties of ferrimagnetic XXZ chains with alternating spins .5A and ,573 withnearest-neighbor exchange interaction are discussed based upon the results for finite-size sys-terms obtained mainly by the exact diagonalization method and partly by the density matrixrenormalization group method. For -l< A< 1, where A is the parameter of anisotropy of theinteractions, the grotznd state is unique or doubly degenerate and gapless, When ,5 : l, theground state of 2N sites is the state xvith total spin N l.5A - Se l, and has nonvanishing N!ellong-range order paranaeter. For ,2s >l, the ground state is doubly degenerate Neel long-rangeordered state with a finite energy gap.
- 社団法人日本物理学会の論文
- 1997-09-15
著者
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NISHIMURA Takeshi
Department of Geophysics, Graduate School of Science, Tohoku University
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ONO Takashi
Department of Surgery, Akita University School of Medicine
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Morita Tetsuya
Department Of Ophthalmology Graduate School Of Medical Sciences Kitasato University
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Morita Tetsuya
Department Of Physics Yokohama National University
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SUGIMOTO Mitsuo
Department of Electronic Engineering, Saitama University
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Sugimoto Mitsuo
Department Of Electronic Engineering Saitama University
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Sugimoto Mitsuo
Department Of Physics Yokohama National University
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Katsumura Manabu
Department of Physics,Yokohama National University
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Ono Takashi
Department Of Physics Yokohama National University
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Ono Takashi
Department Of Biological Science And Technology Tokai University
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Katsumura Manabu
Department Of Physics Yokohama National University
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Nishimura Takeshi
Department Of Biological Sciences Tokyo Metropolitan University
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Nishimura Takeshi
Department Of Physics Yokohama National University
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