Impurity Effects on Two-Dimensional Anisotropic Heisenberg Antiferromagnets.
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- Kawashima Takashi
- Department of Physics, Dokkyo University School of Medicine, Mibu, Tochigi 321–02
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- Oguchi Akihide
- Department of Physics, Faculty of Science and Technology, Science University of Tokyo, Noda, Chiba 278
書誌事項
- タイトル別名
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- Impurity Effects on Two Dimensional Ani
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説明
We study magnetic behavior of a completely random dilute S=1/2 anisotropic Heisenberg antiferromagnet on the two-dimensional square lattice by using the coherent potential approximation. In the anisotropic Heisenberg model, the xy-anisotropy defined by Jp(z)/Jp(xy) is enhanced with increasing nonmagnetic impurities, where Jp(z) and Jp(xy) are the z and xy components of the coherent exchange constant, respectively. On the other hand, the isotropic Heisenberg model retains the isotropic nature for any impurity concentration. The critical concentration at the percolation threshold is obtained. The Néel temperature and the magnitude of the coherent exchange constant are calculated as a function of the impurity concentration.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 63 (5), 1908-1915, 1994
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679158558592
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- NII論文ID
- 110001977494
- 210000098030
- 130004535020
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1994JPSJ...63.1908K
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 3875215
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可
