Magnetic Phases and Long-Range Ordering of the Haldane System in High Magnetic Fields
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概要
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Critical properties of field-induced magnetic phases are investigated in the one-dimensional S = 1 Haldane system with planar anisotropy, using the finite-temperature density-matrix renormalization group method. We point out that the underlying physics of the properties differs significantly between cases of different field directions: The magnetic phase is characterized as the gapless Tomonaga-Luttinger regime in one case and as the gapful soliton regime in the other. In connection with the information obtained for the one-dimensional spin chain, possible implications for the field-induced magnetic long-range ordering are discussed.
- 理論物理学刊行会の論文
- 2002-06-28
著者
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Nishiyama Yoshihiro
Department Of Radiology Kagawa University School Of Medicine
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Harada Isao
Department Of Physics Faculty Of Science Okayama University
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Harada Isao
Department Of Physics Faculty Of Science Kobe University
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Nishiyama Yoshihiro
Department Of Physics Okayama University
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Nishiyama Yoshihiro
Department Of Physics Faculty Of Science Okayama University
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Harada Isao
Department Of Physics Okayama University
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NISHIYAMA Yoshihiro
Department of Physics, Okayama University
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HARADA Isao
Department of Physics, Okayama University
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