What the resonance peak cannot do
Strongly Correlated Electrons
2009-11-07 v1 Superconductivity
Abstract
In certain cuprates, a spin 1 resonance mode is prominent in the magnetic structure measured by neutron scattering. It has been proposed that this mode is responsible for significant features seen in other spectroscopies, such as photoemission and optical absorption, which are sensitive to the charge dynamics, and even that this mode is the boson responsibile for ``mediating'' the superconducting pairing. We show that its small (measured) intensity and weak coupling to electron-hole pairs (as deduced from the measured lifetime) disqualifies the resonant mode from either proposed role.
Cite
@article{arxiv.cond-mat/0110478,
title = {What the resonance peak cannot do},
author = {Hae-Young Kee and Steven A. Kivelson and G. Aeppli},
journal= {arXiv preprint arXiv:cond-mat/0110478},
year = {2009}
}
Comments
4 pages, no figure