About the relation between the quasiparticle Green's function in cuprates obtained from ARPES data and the magnetic susceptibility

TL;DR

This paper explores the connection between quasiparticle Green's functions derived from ARPES data and magnetic susceptibility in cuprates, aiming to bridge spectroscopic and neutron scattering insights.

Contribution

It introduces a method to estimate magnetic susceptibility from ARPES-derived self-energies, facilitating comparison between different experimental techniques.

Findings

Quasiparticle self-energies can be used to estimate magnetic susceptibility.

The approach accounts for many-body effects in cuprates.

Potential for cross-validating ARPES and INS data.

Abstract

Angle resolved photoemission spectroscopy (ARPES) provides a detailed view of the renormalized band structure in cuprates and, consequently, is a key to the self-energy and the quasiparticle Green's function. Such information gives a clue to the comparison of ARPES with scanning tunneling microscopy, inelastic neutron scattering (INS), and Raman scattering data. Here we touch on a potential possibility of such a comparison with the dynamical magnetic susceptibility measured in INS experiments. Calculations based on the experimentally measured quasiparticle self-energies in cuprates lead to the estimated magnetic susceptibility response with many-body effects taken into account.