Spin Dodecamer Formation in the Double-Exchange Spin Ice Model
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- Shimomura Yoshihiro
- Department of Physics and Mathematics, Aoyama Gakuin University
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- Miyahara Shin
- Department of Physics and Mathematics, Aoyama Gakuin University
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- Furukawa Nobuo
- Department of Physics and Mathematics, Aoyama Gakuin University
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We investigated the double-exchange spin ice (DESI) model on a kagomé lattice by Monte Carlo simulation to study the effects of a geometrical frustration, and the mechanism that generates an ordered state in a metallic system. The DESI model on the kagomé lattice is a frustrated metallic system due to an effective ferromagnetic interaction between localized spins caused by the double-exchange (DE) mechanism and a uniaxial anisotropy for the localized spins. A dodecagonal spin cluster (named dodecamer), which consists of twelve localized spins, appears at low temperature when the number of particles per site n\\simeq1⁄3–1⁄2. Such a dodecamer order is driven by both the kinetic energy gain due to the DE mechanism and the geometrical frustration. We discuss that cluster orders, in general, may be a common feature in itinerant electron systems coupled with frustrated adiabatic fields.
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 73 (7), 1623-1626, 2004
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
- 1390001204186885376
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- NII論文ID
- 110001954863
- 210000104874
- 130004538839
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.1623S
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7003795
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
