Quasi-1D dynamics and nematic phases in the 2D Emery model
Abstract
We consider the Emery model of a Cu-O plane of the high temperature superconductors. We show that in a strong-coupling limit, with strong Coulomb repulsions between electrons on nearest-neighbor O sites, the electron-dynamics is strictly one dimensional, and consequently a number of asymptotically exact results can be obtained concerning the electronic structure. In particular, we show that a nematic phase, which spontaneously breaks the point- group symmetry of the square lattice, is stable at low enough temperatures and strong enough coupling.
Keywords
Cite
@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}
}
Comments
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