Destruction of Peierls dimerization in the molecular-crystal model: Effects of quantum phonon fluctuations

被引：28

作者：

Wu, CQ ^{[1
]}

Huang, QF ^{[1
]}

Sun, X ^{[1
]}

机构：

[1] FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.52.R15683

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of quantum phonon fluctuations on the Peierls dimerization in the one-dimensional molecular-crystal model are reexamined by a functional integral approach. An equation for the dimerization order parameter is obtained within a one-loop approximation. The destruction of Peierls dimerization is found by taking the quantum phonon fluctuations into account for the spin-1/2 electron system. The consistency and discrepancy of the result with previous ones are discussed.

引用

收藏

页码：15683 / 15686

页数：4

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