Perturbative Calculation of the Spin-Wave Dispersion in a Disordered Double-Exchange Model

• Semba Taeko

  Department of Mathematical Sciences, Ibaraki University

• Fukui Takahiro

  Department of Mathematical Sciences, Ibaraki University

抄録

We study the spin-wave dispersion of localized spins in a disordered double-exchange model using the perturbation theory with respect to the strength of the disorder potential. We calculate the dispersion up to the next-leading order, and extensively examine the case of one dimension. We show that in that case, disorder yields anomalous gap-like behavior at the Fermi wave number of the conduction electrons.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 73 (10), 2646-2649, 2004

  一般社団法人 日本物理学会

キーワード

• colossal magnetoresistance manganites
• double-exchange model
• randomness
• spin-wave dispersion
• perturbation

詳細情報

• CRID: 1390001204188489600
• NII論文ID: 210000105063
• NII論文ID: 110001979184
• NII論文ID: 130004538572
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.73.2646
• BIBCODE: 2004JPSJ...73.2646S
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7120883
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7120883
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.73.2646
• 本文言語コード: en
• データソース種別:
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  • NDL
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• 抄録ライセンスフラグ: 使用不可