Coexistence of Enhanced Superconductivity and Antiferromagnetism: Possible Correlated Phase Transitions in Trilayer High-Tc Cuprates

TL;DR

This paper investigates how superconductivity and antiferromagnetism coexist and interact in trilayer cuprates, revealing enhanced orders and phase transitions driven by interlayer coupling and doping.

Contribution

It introduces an interlayer magnetic scattering term in a multilayer t-J model, demonstrating enhanced coexistence and phase transitions in trilayer high-Tc cuprates.

Findings

Both SC and AFM orders are enhanced in multilayer systems.

The layer configuration influences the phase diagram significantly.

Abrupt phase transitions occur with doping and tunneling adjustments.

Abstract

Based on a hybrid interlayer coupling mechanism, we study the coexistence of superconductivity (SC) and antiferromagnetism (AFM) in trilayer cuprates. By introducing an interlayer magnetic scattering term, we solve the multilayer $t{-}J$ model with Josephson coupling under the framework of Gutzwiller projection. We show that both the SC and AFM orders in the multilayered system are enhanced and the range of AFM order is extended. The layer configuration of d-wave pairing gap and AFM order further plays an essential role in determining the interlayer magnetic and superconducting coupling phase diagram of such multilayered systems. Abrupt phase transitions between correlated states carrying distinct configurational symmetries are unveiled by tuning the doping level and/or the tunneling strengths.