Enhanced Pair-Density-Wave Vertices in a Bilayer Hubbard Model at Half Filling

Motivated by the pair-density-wave (PDW) state found in the one-dimensional Kondo-Heisenberg chain, we report on a determinant quantum Monte Carlo study of pair fields for a two-dimensional half-filled Hubbard layer coupled to an itinerant, noninteracting layer with one electron per site. In a speci...

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Bibliographic Details
Published inPhysical review letters Vol. 133; no. 15; p. 156503
Main Authors Liu, Fangze, Huang, Xu-Xin, Huang, Edwin W, Moritz, Brian, Devereaux, Thomas P
Format Journal Article
LanguageEnglish
Published United States 11.10.2024
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Summary:Motivated by the pair-density-wave (PDW) state found in the one-dimensional Kondo-Heisenberg chain, we report on a determinant quantum Monte Carlo study of pair fields for a two-dimensional half-filled Hubbard layer coupled to an itinerant, noninteracting 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.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.156503