Application of Modified Spin Wave Theory to Ferromagnetic Spin Chain with Arbitrary Range Interactions(Low Dimensional Systems, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
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概要
- 論文の詳細を見る
The modified spin-wave (M-SW) theory is generalized to the case of arbitrary range interactions. Applying the results of the theory to the system with up to NNN interactions, we have obtained the analytical expressions of thermodynamic quantities at low temperatures and also analyzed the anomalous behavior near the generalized cross-over point. Numerical calculations of the case S=1/2 have been performed to compare the results with those obtained by the exact diagonalization method. Our numerical results give a fairly good agreement with those of the exact-diagonalization-method.
- 理論物理学刊行会の論文
- 2005-10-31
著者
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鏑木 誠
神戸大学国際文化学部
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KABURAGI Makoto
Faculty of Cross-Cultural Studies, Kobe University
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TONEGAWA Takashi
Department of Mechanical Engineering, Fukui University of Technology
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康 敏
神戸大学国際文化学研究科
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Tonegawa T
Department Of Mechanical Engineering Fukui University Of Technology
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Tonegawa Takashi
Department Of Earth And Environmental Sciences Graduate School Of Environmental Studies Nagoya Unive
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Tonegawa Takashi
Department Of Mechanical Engineering Fukui Uneversity Of Technology
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Kaburagi Makoto
Graduate School Of Intercultural Studies Kobe University
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Kaburagi Makoto
Faculty Of Cross-cultural Studies Kobe University
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HASHIMOTO Takashi
Japan Advanced Institute of Science and Technology
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KANG Min
Faculty of Cross-Cultural Studies, Kobe University
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Tonegawa Takashi
Faculty Of Engineering Fukui University Of Technology
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鏑木 誠
神戸大学国際文化学研究科
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KABURAGI Makoto
Faculty of Cross-Cultural-Studies, Kobe University
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KABURAGI Makoto
Department of Physics, Osaka University
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