d-Wave Pairing State in Terms of the Zhang-Rice Singlets
Strongly Correlated Electrons
2009-11-13 v2 Superconductivity
Abstract
In cuprate superconductors doping is believed to create holes on the O-sites, which couple antiferromagnetically with holes on the Cu-sites to form the so-called Zhang-Rice singlets. Here we study a d-wave pairing state based on the Zhang-Rice singlet states. Upper and lower bounds of an off-diagonal long-range order parameter with d-wave symmetry for this state are estimated. We also introduce a concrete model with on-site Coulomb repulsion and kinds of antiferromagnetic interactions whose ground state is this d-wave pairing state.
Keywords
Cite
@article{arxiv.0704.3610,
title = {d-Wave Pairing State in Terms of the Zhang-Rice Singlets},
author = {Akinori Tanaka},
journal= {arXiv preprint arXiv:0704.3610},
year = {2009}
}
Comments
19 pages, 3 figures;In Verson 2, section 'Summary and Remarks' has been added, typos have been corrected, and some minor changes have been made