Effects of dilute Zn impurities on the uniform magnetic susceptibility of YBa2Cu3O{7-delta}

TL;DR

This paper investigates how dilute Zn impurities influence the uniform magnetic susceptibility in YBa2Cu3O{7-delta}, revealing that impurity scattering can enhance susceptibility through coupling of magnetic components, with implications for experimental observations.

Contribution

It introduces a model showing how dilute Zn impurities affect magnetic susceptibility by coupling different magnetic fluctuation components in cuprates.

Findings

Impurity scattering couples q~(pi,pi) and q~0 susceptibility components.

Coupling can lead to an enhancement of the uniform susceptibility.

Results are relevant for interpreting experimental data on Zn-doped YBa2Cu3O{7-delta}.

Abstract

The effects of dilute Zn impurities on the uniform magnetic susceptibility are calculated in the normal metallic state for a model of the spin fluctuations of the layered cuprates. It is shown that scatterings from extended impurity potentials can lead to a coupling of the q~(pi,pi) and the q~0 components of the magnetic susceptibility chi(q). Within the presence of antiferromagnetic correlations, this coupling can enhance the uniform susceptibility. The implications of this result for the experimental data on Zn substituted YBa2Cu3O{7-delta} are discussed.