$Z_{2}$-Vortex Ordering of the Triangular-Lattice Heisenberg Antiferromagnet
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概要
- 論文の詳細を見る
Ordering of the classical Heisenberg antiferromagnet on the triangular lattice is studied by means of a mean-field calculation, a scaling argument and a Monte Carlo simulation, with special attention to its vortex degree of freedom. The model exhibits a thermodynamic transition driven by the $Z_{2}$-vortex binding-unbinding, at which various thermodynamic quantities exhibit an essential singularity. The low-temperature state is a "spin-gel" state with a long but finite spin correlation length where the ergodicity is broken topologically. Implications to recent experiments on triangular-lattice Heisenberg antiferromagnets are discussed.
- Physical Society of Japanの論文
- 2010-02-15
著者
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Kawamura Hikaru
Department Of Earth And Space Science Faculty Of Science Osaka University
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Yamamoto Atsushi
Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University
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Okubo Tsuyoshi
Department of Earth and Space Science, Faculty of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Kawamura Hikaru
Department of Earth and Space Science, Faculty of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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