Theory for Gossamer and Resonating Valence Bond Superconductivity
Strongly Correlated Electrons
2009-11-10 v1
Abstract
We use an effective Hamiltonian for two-dimensional Hubbard model including an antiferromagnetic spin-spin coupling term to study recently proposed gossamer superconductivity. We formulate a renormalized mean field theory to approximately take into account the strong correlation effect in the partially projected Gutzwiller wavefucntions. At the half filled, there is a first order phase transition to separate a Mott insulator at large Coulomb repulsion U from a gossamer superconductor at small U. Away from the half filled,the Mott insulator is evolved into an resonating valence bond state, which is adiabatically connected to the gossamer superconductor.
Keywords
Cite
@article{arxiv.cond-mat/0308398,
title = {Theory for Gossamer and Resonating Valence Bond Superconductivity},
author = {J. Y. Gan and F. C. Zhang and Z. B. Su},
journal= {arXiv preprint arXiv:cond-mat/0308398},
year = {2009}
}
Comments
10 pages, 13 figures