Quasiparticles as composite objects in the RVB superconductor
Strongly Correlated Electrons
2009-11-07 v1 Superconductivity
Abstract
We study the nature of the superconducting state, the origin of d-wave pairing, and elementary excitations of a resonating valence bond (RVB) superconductor. We show that the phase string formulation of the t-J model leads to confinement of bare spinon and holon excitations in the superconducting state, though the vacuum is described by the RVB state. Nodal quasiparticles are obtained as composite excitations of spinon and holon excitations. The d-wave pairing symmetry is shown to arise from short range antiferromagnetic correlations.
Keywords
Cite
@article{arxiv.cond-mat/0208017,
title = {Quasiparticles as composite objects in the RVB superconductor},
author = {Yi Zhou and V. N. Muthukumar and Zheng-Yu Weng},
journal= {arXiv preprint arXiv:cond-mat/0208017},
year = {2009}
}