One-dimensional S=1 Spin-Orbital Model with Uniaxial Single-Ion Anisotropy(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We investigate ground-state properties of a one-dimensional S=1 spin-orbital model with or without uniaxial single-ion anisotropy. By means of the density matrix renormalization group method, we compute the ground-state energy, the magnetization curves and the correlation functions. We discuss how the ground-state properties depend on the two exchange couplings for orbital and spin sectors. The phase diagramobtained is compared with that for the S=1/2 model. We also address the effect of uniaxial single-ion anisotropy.
- 社団法人日本物理学会の論文
- 2005-02-15
著者
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Kawakami Norio
Department Of Applied Physics Osaka University
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Miyashita Satoshi
Department Of Applied Physics Osaka University
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