Unconventional Quarter-Filled SDW States with Alternating Potential and Dimerization : Condensed Matter: Electronic Properties, etc.

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概要

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• 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 u^2/(2g) with and effective coupling constant g, we evaluate critical temperatures, T_C, T_s and T_u, corresponding to the onset of Δ_c(∝ <cosθ>), Δ_s(∝ <sinθ>) 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 relavance to the SDW state in (EDT-TTF)_2AuBr_2 salt is discussed.

• 社団法人日本物理学会の論文
• 2000-02-15

著者

• Suzumura Yoshikazu

  Crest Japan Science And Technology Corporation

• ITAKURA Toshifumi

  Department of Physics Nagoya University

• Itakura Toshifumi

  Department Of Physics Kyoto University

関連論文

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• Unconventional Quarter-Filled SDW States with Alternating Potential and Dimerization : Condensed Matter: Electronic Properties, etc.
• Transverse Incommensurability in Two-Coupled Chains of Quarter-Filled Spin-Density-Waves : Condensed Matter: Electronic Properties, etc.
• Heisenberg Model and Supersymmetric t-J Model with Two-Band Structure in One Dimension
• Quasi-One-dimensional Spin-Density-Wave States in Presence of Two Commensurate Potentials and Interchain Misfit(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Commensurate-Incommensurate Transition in SDW States of Quasi-One-Dimensional Organic Conductors
• Novel Phase Transition in Quarter-Filled SDW State with Dimerization
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• Dephasing of Coupled Spin Qubit System during Gate Operations Due to Background Charge Fluctuations(Cross-disciplinary Physics and Related Areas of Science and Technology)
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