Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates
Abstract
The iron pnictides and the cuprates represent two families of materials, where strong antiferromagnetic correlation drives three other distinct ordering tendencies: (1) superconducting pairing, (2) Fermi surface distortion, and (3) orbital current order. We propose that (1)-(3) and the antiferromagnetic correlation are the hallmarks of a class of strongly correlated materials to which the cuprates and pnictides belong. In this paper we present the results of the functional renormalization group studies to support the above claim. In addition, we show that as a function of the interlayer hopping parameter, the double layer Hubbard model nicely interpolates between the cuprate and the iron pnictide physics. Finally, as a check, we will present the renormalization group study of a ladder version of the iron pnictide, and compare the results to those of the two-dimensional model.
Keywords
Cite
@article{arxiv.0905.1711,
title = {Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates},
author = {Hui Zhai and Fa Wang and Dung-Hai Lee},
journal= {arXiv preprint arXiv:0905.1711},
year = {2009}
}
Comments
18 pages, 20 figures, revised version, one more figure added and references updated