Unconventional Quarter-Filled SDW States with Alternating Potential and Dimerization.

• Itakura Toshifumi

  Department of Physics, Nagoya University, Nagoya 464–8602

• Suzumura Yoshikazu

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

抄録

The interplay of alternating potential and dimerization (u) has been examined for the spin density wave (SDW) state in a quasi-one-dimensional system at quarter-filling, which is expressed in terms of θ, a phase of the SDW. By taking account of the dimerization energy u² /(2g) with an effective coupling constant g, we evaluate critical temperatures, T_c, T_s and T_u, corresponding to the onset of Δ_c (∝ ‹ cos θ › ), Δ_s (∝ ‹ sin θ › ) and u, respectively. Two kinds of noticeable critical temperatures of the SDW states are obtained where T_c > T_s = T_u for g < g_c and T_u > T_c = T_s for g > g_c. The quantity g_c is increased by both the alternating potential and the interchain coupling. The relevance to the SDW state in (EDT-TTF)₂AuBr₂ salt is discussed.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 69 (2), 320-323, 2000

  一般社団法人 日本物理学会

キーワード

• spin density wave
• phase
• quarter-filled band
• alternating potential
• dimerization
• commensurability

詳細情報

• CRID: 1390282679157447680
• NII論文ID: 110001971358
• NII論文ID: 130004537420
• NII論文ID: 210000102558
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.69.320
• BIBCODE: 2000JPSJ...69..320I
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 5289963
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5289963
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.69.320
• 本文言語コード: en
• データソース種別:
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