d-wave Superconductivity, Orbital Magnetism, and Unidirectional Charge Order in the t-J Model

TL;DR

This paper explores how modulated d-wave superconductivity, charge order, and orbital magnetism emerge and coexist in the t-J model, inspired by recent experimental observations in cuprate superconductors.

Contribution

It demonstrates the robustness of stripe phases and valence bond crystal tendencies within the t-J model, connecting theoretical predictions with experimental findings.

Findings

Unidirectional charge density modulations emerge in the t-J model.

Stripe phases are robust across different Gutzwiller factor implementations.

Related stripe phases originate from the staggered flux phase, relevant to pseudogap phenomena.

Abstract

Recent scanning tunneling microscopy in the superconducting regime of two different cuprate families has revealed unidirectional bond-centered modulation in the local electronic density of states. Motivated by this result we investigate the emergence of modulated d-wave superconductivity coexisting with charge domains that form along one of the crystal axes. While detailed stripe profiles depend on the used form of the Gutzwiller factors, the tendency towards a valence bond crystal remain robust. We also find closely related stripe phase originating from the staggered flux phase, a candidate for the pseudogap phase of lightly doped cuprates.