Interlayer couplings and the coexistence of antiferromagnetic and d-wave pairing order in multilayer cuprates

TL;DR

This paper investigates the coexistence of antiferromagnetic and d-wave superconducting orders in multilayer cuprates, emphasizing the role of interlayer couplings and screening effects through a theoretical approach.

Contribution

It provides a theoretical analysis using renormalized mean field theory to explain the extended coexistence region in multilayer cuprates.

Findings

Enhanced screening of potential modulations explains coexistence.

Interlayer couplings influence order parameter coexistence.

Potential for improved experimental determination of order parameters.

Abstract

A more extended low density region of coexisting uniform antiferromagnetism and d-wave superconductivity has been reported in multilayer cuprates, when compared to single or bilayer cuprates. This coexistence could be due to the enhanced screening of random potential modulations in inner layers or to the interlayer Heisenberg and Josephson couplings. A theoretical analysis using a renormalized mean field theory, favors the former explanation. The potential for an improved determination of the antiferromagnetic and superconducting order parameters in an ideal single layer from zero field NMR and infrared Josephson plasma resonances in multilayer cuprates is discussed.