Homomorphic Cluster Coherent Potential Approximation for Systems with Site-Diagonal and/or Off-Diagonal Randomness

• Yonezawa Fumiko

  Research Institute for Fundamental Physics, Kyoto University

• Odagaki Takashi

  Department of Chemistry, Kyoto University

書誌事項

タイトル別名

• Homomorphic Cluster Coherent Potential

抄録

We apply the homomorphic cluster coherent potential approximation (HCPA) to systems with site-diagonal and/or off-diagonal randomness. We show numerically that the average Green’s function obtained on the basis of the HCPA is analytic off the real axis on the complex energy plane. We also show that the HCPA reproduces the ordinary single-site CPA and the molecular CPA when systems include only diagonal disorder. The HCPA is advantageous in that it can deal with both site-diagonal and off-diagonal disorder in a unified manner. We also present a numerical result for a disordered chain by taking both kinds of disorder into account. The density of states calculated in the HCPA is in good agreement with the result of a computer simulation.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 47 (2), 388-393, 1979

  一般社団法人 日本物理学会

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1390001204185426816
• NII論文ID: 110001964639
• NII論文ID: 130003896024
• NII論文ID: 210000088271
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.47.388
• BIBCODE: 1979JPSJ...47..388Y
• COI: 1:CAS:528:DyaE1MXls1egs78%3D
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 2059313
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2059313
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.47.388
• 本文言語コード: en
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