Enhanced pair-density-wave vertices in a bilayer Hubbard model at half-filling
Strongly Correlated Electrons
2024-10-10 v2 Superconductivity
Abstract
Motivated by the pair-density-wave (PDW) state found in the one-dimensional Kondo-Heisenberg chain, we report on a determinant quantum Monte Carlo DQMC study of pair-fields for a two-dimensional half-filled Hubbard layer coupled to an itinerant, non-interacting layer with one electron per site. In a specific range of interlayer hopping, the pairing vertex associated with PDW order becomes more attractive than that for uniform d-wave pairing, although both remain subdominant to the leading antiferromagnetic correlations at half-filling. Our result sheds light on where one potentially may find a PDW state in such a model.
Keywords
Cite
@article{arxiv.2404.01389,
title = {Enhanced pair-density-wave vertices in a bilayer Hubbard model at half-filling},
author = {Fangze Liu and Xu-Xin Huang and Edwin W. Huang and Brian Moritz and Thomas P. Devereaux},
journal= {arXiv preprint arXiv:2404.01389},
year = {2024}
}