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Using the local density approximation and its combination with dynamicalmean-field theory, we show that electronic correlations induce a single-sheet,cuprate-like Fermi surface for hole-doped 1/1 LaNiO3 /LaAlO3 heterostructures,even though both eg orbitals contribute to it. The Ni 3d 3z^2-1 orbital playsthe role of the axial Cu 4s-like orbital in the cuprates. These two resultsindicate that "orbital engineering" by means of heterostructuring should bepossible. As we also find strong antiferromagnetic correlations, the low-energyelectronic and spin excitations in nickelate heterostructures resemble those ofhigh-temperature cuprate superconductors.

Turning a nickelate Fermi surface into a cuprate-like one through heterostructuring