Orientational Peierls Transition in Quasi One-Dimensional Organic Solids
Orientational Peierls Transition in Quasi One-Dimensional Organic Solids
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准一维有机固体中的取向 Peierls 转变
DOI：
10.1103/physrevlett.34.1096
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发表时间：
1975
影响因子：
8.6
通讯作者：
H. Morawitz
中科院分区：
文献类型：
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作者：
H. Morawitz
在紧束缚近似下，考虑了平面分子离子堆的一个简单模型。证明了转动自由度对两个相邻分子离子的扩展π电子波函数的转移积分的调制和相应带边界libron qL =±π z 0的软化导致取向Peierls跃迁。可能的相关性的金属-绝缘体过渡在tetrathiafulvalene tetracyanoquinodimethane强调。
A simple model of a stack of planar molecular ions is considered in tight-binding approximation. I show that the modulation of the transfer integral of the extended π-electron wave functions of two adjacent molecular ions by a rotational degree of freedom and the softening of the corresponding zone boundary libron q L=±π z 0 leads to an orientational Peierls transition. The possible relevance to the metal-insulator transition in tetrathiafulvalene tetracyanoquinodimethane is stressed.