2D Emery 模型中的准一维动力学与螺旋相
强关联电子
2016-08-31 v4 超导电性
摘要
我们考虑了高温超导体 Cu-O 平面上的 Emery 模型。我们指出,在强耦合极限下,当电子在最近邻 O 原子上存在强库仑排斥时,电子动力学严格为一维的,因而可获得关于电子结构的若干渐近精确结果。特别是,我们表明,在温度足够低且耦合足够强时,螺旋相是稳定的,该相在平面晶格的点群对称性上自发破坏。
引用
@article{arxiv.cond-mat/0302163,
title = {Quasi-1D dynamics and nematic phases in the 2D Emery model},
author = {Steven A. Kivelson and Eduardo Fradkin and Theodore Geballe},
journal= {arXiv preprint arXiv:cond-mat/0302163},
year = {2016}
}
备注
8 pages, 5 eps figures; revised manuscript with more detailed discussions; two new figures and three edited figuresedited figures; 14 references; new appendix with a detailed proof of the one-dimensional dynamics of the system in the strong coupling limit