Application of the Cluster Variation Method to Spin Ice Systems on the Pyrochlore Lattice
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概要
- 論文の詳細を見る
The cactus approximation in the cluster variation method is applied to the spin ice system with nearest neighbor ferromagnetic coupling. The temperature dependences of the entropy and the specific heat show qualitatively good agreement with those observed by Monte Carlo simulations and experiments, and the Pauling value is reproduced for the residual entropy. The analytic expression of the q-dependent magnetic susceptibility is obtained, from which the absence of magnetic phase transition is confirmed. The neutron scattering pattern is also evaluated and found to be consistent with that obtained from Monte Carlo simulations.
- 社団法人日本物理学会の論文
- 2002-03-15
著者
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NEMOTO Koji
Division of Physics, Graduate School of Science, Hokkaido University
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和田 宏
Hokkaido Univ. Sapporo
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和田 宏
北海道大学理学部
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Nemoto K
Division Of Physics Graduate School Of Science Hokkaido University
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Nemoto Koji
Division Of Physics Graduate School Of Science Hokkaido University
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YOSHIDA Shun-ichi
Division of Physics, Graduate School of Science, Hokkaido University
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WADA Koh
Division of Physics, Graduate School of Science, Hokkaido University
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Wada Koh
Division Of Physics Graduate School Of Science Hokkaido University
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Yoshida S
Division Of Physics Graduate School Of Science Hokkaido University
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