Effects of Next-Nearest-Neighbor Repulsion on One-Dimensional Quarter-Filled Electron Systems.

• Yoshioka Hideo

  Department of Physics, Nara Women's University, Nara 630-8506

• Tsuchiizu Masahisa

  Department of Physics, Nagoya University, Nagoya 464-8602

• Suzumura Yoshikatsu

  Department of Physics, Nagoya University, Nagoya 464-8602 CREST, Japan Science and Technology Corporation (JST)

抄録

We examine effects of the next-nearest-neighbor repulsion on electronic states of a one-dimensional interacting electron system which consists of quarter-filled band and interactions of on-site and nearest-neighbor repulsion. We derive the effective Hamiltonian for the electrons around wave number ± k_F (k_F: Fermi wave number) and apply the renormalization group method to the bosonized Hamiltonian. It is shown that the next-nearest-neighbor repulsion makes 4k_F-charge ordering unstable and suppresses the spin fluctuation. Further the excitation gaps and spin susceptibility are also evaluated.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 70 (3), 762-773, 2001

  一般社団法人 日本物理学会

キーワード

• organic compounds
• charge density waves
• spin density waves
• quarter-filling
• long-range Coulomb interaction
• spin gap

詳細情報

• CRID: 1390282679157161856
• NII論文ID: 210000103570
• NII論文ID: 110001978956
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.70.762
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 5731507
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5731507
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.70.762
• 本文言語コード: en
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