Long-Range Order of the Three-Sublattice Structure in the S=1 Heisenberg Antiferromagnet on a Spatially Anisotropic Triangular Lattice
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概要
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We study the S=1 Heisenberg antiferromagnet on a spatially anisotropic triangular lattice by the numerical diagonalization method. We examine the stability of the long-range order of a three-sublattice structure observed in the isotropic system between the isotropic case and the case of isolated one-dimensional chains. It is found that the long-range-ordered ground state with this structure exists in the range of 0.7\lesssim J_{2}/J_{1}\leq 1, where J_{1} is the interaction amplitude along the chains and J_{2} is the amplitude of other interactions.
- 2013-04-15
著者
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Todo Synge
Institute For Solid State Physics University Of Tokyo
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Nakano Hiroki
Graduate School And Faculty Of Science Himeji Institute Of Technology
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Sakai Tôru
Graduate School of Material Science, University of Hyogo, Kamigori, Hyogo 678-1297, Japan
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Todo Synge
Institute for Solid State Physics, University of Tokyo, Kobe 650-0047, Japan
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