Magnetic Excitations in Bilayer High-Temperature Superconductors with Stripe Correlations

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The universal behaviour of the magnetic excitations in high-temperature superconductors is described in a model with static stripes retaining only the localized spin degrees of freedom. The stripes are represented by a model of coupled two-leg spin ladders. We start from the results obtained previously by continuous unitary transformations for an isolated spin ladder. A quantitative description of neutron scattering data is reached, using a model for a single cuprate layer with well established values of the exchange coupling constants. The neutron resonance peak is explained in terms of a saddle point in the dispersion of the magnetic excitations. Here we make predictions for bilayer systems with in-phase or out-of-phase stripe correlations. The results may serve as a guide for future experimental analyses.
2x12 pages, 2x12 figures (color and bw version)

Keywords

Superconductivity, Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/25893

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502460
 http://arxiv.org/abs/cond-mat/0502460
 JPSJ, Vol. 74 (2005) Supplement page 86

Collections

arXiv