The emergence of antiferromagnetic correlations and Kondolike features in a model for infinite layer nickelates

This talk will introduce a recent determinant quantum Monte Carlo study on a two-band model inspired by infinite-layer nickelates, focusing on the influence of interlayer hybridization between the $3d_{x^2-y^2}$​ orbital of the Ni-O layer and the 5d orbital of the rare-earth layer. For an overall half-filling of the Ni $3d_{x^2-y^2}$​ orbital, interlayer hybridization leads to "self-doped" holes in the Ni-O layer and the suppression of antiferromagnetic ordering, giving rise instead to spin-density and charge-density stripe-like states in the Ni-O layer. As the interlayer hybridization increases, both the Ni-O and rare-earth layers develop antiferromagnetic correlations, even though neither layer is individually at half-filling. For intermediate hybridization, approximately comparable to the intralayer nearest-neighbor hopping $t_{Ni}$, the model exhibits signatures of Kondo-like physics.