Phase Transitions of Anisotropic Heisenberg Antiferromagnets on the Triangular Lattice
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概要
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Phase transitions in anisotropic Heisenberg antiferromagnets with nearestneighbour coupling constants (J.,J,J.) on tlte triangular lattice have beeninvestigated. In particular, for the case of Ileisenberg-Ising model, ?J.? >?J.?=J,? >0, successive phase transitions due to orderings of z components and ofxy components have been found. A non-trivial degeneracy is found both in theground state and in harmonic excitations. Divergent-like behaviovtr of the uni-form susceptibility in the xy plane at low temperatures is found, which is supposedto be caused by the non-trivial degeneracy.
- 社団法人日本物理学会の論文
- 1985-09-15
著者
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Kawamura Hikaru
Department Of Earth And Space Science Faculty Of Science Osaka University
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Miyashita Seiji
Department Of Applied Physics Graduate School Of Engineering University Of Tokyo
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Miyashita Seiji
Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo
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