Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor
Superconductivity
2011-08-29 v2 Strongly Correlated Electrons
High Energy Physics - Theory
Abstract
We study the particle-hole exciton mode in the QED3 theory of a phase-fluctuating d-wave superconductor in ladder approximation. We derive a Schroedinger-like equation for the exciton bound state and determine the conditions for its existence. We find the dispersion of this mode below the particle-hole continuum and compare our results with the resonance observed in neutron scattering measurements in cuprates.
Keywords
Cite
@article{arxiv.cond-mat/0701724,
title = {Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor},
author = {Babak H. Seradjeh and Igor F. Herbut},
journal= {arXiv preprint arXiv:cond-mat/0701724},
year = {2011}
}
Comments
8 pages, 3 .eps fugures, RevTeX4; v2: Brief literature review added, references updated and a few typos corrected. Published version in PRB