Superconductivity in striped Hubbard Clusters

TL;DR

This paper investigates the superconducting properties of striped Hubbard clusters, focusing on d-wave pairing signals and their dependence on system parameters, to understand high-T_c superconductor behavior.

Contribution

It provides a microscopic analysis of striped Hubbard clusters, highlighting the emergence of d-wave superconductivity in geometrically striped arrangements.

Findings

Signal in the d-wave channel observed

Dependence of superconductivity on system size and shape analyzed

Interaction strength influences pairing properties

Abstract

The CuO-planes of high-T_c superconductors were found to consist of geometric stripes with alternating superconducting and antiferromagnetic areas. Here we will investigate the repulsive Hubbard model of striped clusters as a possible microscopic description of the superconducting elements. The focus of our attention lies on the superconducting properties. We report in agreement with the square Hubbard model a signal in the d-wave channel and investigate its dependence on system size, cluster shape and interaction strength.