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Updated: Jun 9, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
Enhanced Pair-Density-Wave Vertices in a Bilayer Hubbard Model at Half Filling
Fangze Liu1,2, Xu-Xin Huang2,3, Edwin W Huang4,5,6
1Department of Physics, <a href="https://ror.org/00f54p054">Stanford University</a>, Stanford, California 94305, USA.
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 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.
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