The study on the Peierls phase transition of TTF-TCNQ

被引：1
作者：
Zhang, HQ [1 ]
Liu, SJ [1 ]
Li, RW [1 ]
机构：
[1] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
来源：
ACTA PHYSICA SINICA | 2005年 / 54卷 / 07期
关键词：
one-dimensional organic conductor; Peierls phase transition temperature; electron-phonon interaction;
D O I：
10.7498/aps.54.3317
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
According to Peierls phase transition theory on the basis of the electron-phonon interaction, the Peierls phase transition temperature of a one-dimensional organic conductor TTF-TCNQ is computed by using the deformation potential model with the data calculated by using a semi-empirical crystal orbital method. The result indicates that the Peierls phase transition temperature of TTF chains is lower than that of TCNQ chains, which demonstrate that the electron-phonon coupling interaction in TTF chains is weaker than that in TCNQ chains, and the metal-insulator phase transition in TW-TCNQ at 54K mainly takes place in TCNQ chains.
引用
收藏
页码：3317 / 3320
页数：4
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