Charge Segregation and Antiferromagnetism in High-Tc Superconductors

TL;DR

This paper explores how charge segregation and antiferromagnetism coexist in high-temperature superconductors, providing experimental evidence and discussing their implications for understanding superconductivity.

Contribution

It presents new neutron and X-ray scattering results on charge and spin modulations, and discusses their role in the coexistence of antiferromagnetism and superconductivity.

Findings

Evidence of modulated spin and charge densities in Nd-doped La(2-x)Sr(x)CuO(4)

New results on Zn-doped samples showing charge segregation

Discussion of open questions linking segregation to superconductivity

Abstract

Local antiferromagnetism coexists with superconductivity in the cuprates. Charge segregation provides a way to reconcile these properties. Direct evidence for modulated spin and charge densities has been found in neutron and X-ray scattering studies of Nd-doped La(2-x)Sr(x)CuO(4). Here we discuss the nature of the modulation, and present some new results for a Zn-doped sample. Some of the open questions concerning the connections between segregation and superconductivity are described.