The Relation of Neutron Incommensurability to Electronic Structure in High Temperature Superconductors

TL;DR

This paper explores how neutron incommensurability in bilayer cuprate superconductors relates to their electronic structure, using models inspired by photoemission data to explain experimental observations.

Contribution

It demonstrates that electronic dispersions based on photoemission data can accurately reproduce neutron scattering incommensurability patterns and their energy dependence.

Findings

Incommensurability pattern matches experimental data

Electronic dispersions explain energy dependence

Resonance contributes to superconducting energy

Abstract

The relation between the incommensurability observed in neutron scattering experiments in bilayer cuprate superconductors and the electronic structure is investigated. It is found that the observed incommesurability pattern, as well as its dependence on energy, can be well reproduced by electronic dispersions motivated by angle resolved photoemission data. The commensurate resonance and its contribution to the superconducting condensation energy are discussed in the context of these calculations.