  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.
