Low Temperature Properties of the Double Layer Quantum Heisebnerg Antiferromagnet-Modified Spin Wave Method-
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概要
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The low temperature properties of the double layer quantum Heisenberg antifer-romgnet are studied by the modified spin wave method proposed by Takahashi. As expected from the lowest order spin wave analysis, the spin fluctuation decreases withthe increase of the interlayer coupling J, for small J., while it turns to increase forlarge J. for the antiferromagnetic J.. The long range order is destroyed for largeenough J.. The disordered phase is the singlet gas phase. The low temperaturebehaviors of the spin-spin correlation length are also calculated and characters of thelow temperature phase are discussed.
- 社団法人日本物理学会の論文
- 1990-06-15
著者
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Hida Kazuo
Department Of Physics Faculty Of Science Saitama University
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Hida Kazuo
Department Of Engineering Science Faculty Of Engineering Hokkaido University
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