Bond and charge ordering in low-dimensional organic conductors

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• 作者：Jean-Paul Pouget ; ^{pouget@lps.u-psud.fr}
• 关键词：Organic conductors ; Charge density wave ; Charge ordering ; Spin-Peierls transition
• 刊名：Physica B
• 出版年：2012
• 出版时间：1 June, 2012
• 年：2012
• 卷：407
• 期：11
• 页码：1762-1770
• 全文大小：974 K

文摘

We review 35 years of structural studies of quasi-1D organic conductors during which the concepts of 2k_F and 4k_F BOW and CDW have been elaborated. In strongly correlated quarter filled band systems these instabilities give rise to SP, DM and CO ground states. We relate these structural features to the instabilities of the 1D electron gas. To stabilize the different ground states the nature of the electron-phonon coupling has to be considered together with the coupling of the organic stacks with the anion sublattice. New results concerning the classification of the SP phase in connection with the adiabatic or antiadiabatic phonon field and its competition with the CO are also introduced.