Spin-Peieris Transition in S = 1 Antiferromagnetic Heisenberg Chains
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概要
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We investigate a one-dimensional S = 1 antiferromagnetic Heisenberg model coupled to lattice distortion by a quantum Monte Carlo method. The instability to a dimerized chain in the ground state depends on the value of the elastic constant, unlike the case of S = 1/2. We find the first-order transition between a uniform Haldane state and a dimerized state. The two non-magnetic states coexist in the ground state and a domain-wall structure is observed.
- 理論物理学刊行会の論文
- 2002-06-28
著者
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MIYASHITA Seiji
Department of Applied Physics, Graduate School of Engineering, The University of Tokyo
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Onishi Hiroaki
Department Of Neurosurgery Brain And Nerve Center Asanogawa General Hospital
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Onishi Hiroaki
Department Of Earth And Space Science Graduate School Of Science Osaka University
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Onishi Hiroaki
Department Of Applied Physics Graduate School Of Engeneering University Of Tokyo : Advanced Science
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Miyashita Seiji
Department Of Applied Physics University Of Tokyo
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Miyashita Seiji
Department Of Applied Physics Graduate School Of Engineering University Of Tokyo
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Miyashita Seiji
Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo
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MIYASHITA Seiji
Department of Applied Physics, Graduate School of Engineering, University of Tokyo
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