Electromagnetic Response and Approximate SO(5) Symmetry in High-Tc Superconductors
Superconductivity
2009-10-31 v1 High Energy Physics - Phenomenology
Abstract
It has been proposed that the effective Hamiltonian describing high T_c superconductivity in cuprate materials has an approximate SO(5) symmetry relating the superconducting (SC) and antiferromagnetic (AF) phases of these systems. We show that robust consequences of this proposal are potentially large optical conductivities and Raman scattering rates in the AF phase, due to the electromagnetic response of the doubly-charged pseudo Goldstone bosons which must exist there. This provides strong constraints on the properties of the bosons, such as their mass gap and velocity.
Keywords
Cite
@article{arxiv.cond-mat/9801303,
title = {Electromagnetic Response and Approximate SO(5) Symmetry in High-Tc Superconductors},
author = {C. Burgess and J. Cline and A. Lutken},
journal= {arXiv preprint arXiv:cond-mat/9801303},
year = {2009}
}
Comments
4 pages, 3 figures