Phase Diagram of S=1 XXZ Chain with Next-Nearest-Neighbor Interaction(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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The one dimensional S=1 XXZ model with next-nearest-neighbor interaction α and Ising-type anisotropy Δ is studied by using a numerical diagonalization technique. We discuss the ground state phase diagram of this model numerically by the twisted-boundary-condition level spectroscopy method and the phenomenological renormalization group method, and analytically by the spin wave theory. We determine the phase boundaries among the XY phase, the Haldane phase, the ferromagnetic phase and the Neel phase, and then we confirm the universality class. Moreover, we map this model onto the nonlinear σ model and analyze the phase diagram in the α≪-1 and Δ∿1 region by using the renormalization group method.
- 社団法人日本物理学会の論文
- 2005-05-15
著者
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TONEGAWA Takashi
Department of Mechanical Engineering, Fukui University of Technology
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Tonegawa Takashi
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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Nomura Kiyohide
Department of Physics, Tokyo Institute of Technology
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MURASHIMA Takahiro
Department of Physics, Kyushu University
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HIJII Keigo
Department of Physics, Kyushu University
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Nomura Kiyohide
Department Of Physics Kyushu Univercity
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NOMURA Kiyohide
Department of Physics, Kyushu University
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