Turning a Nickelate Fermi Surface into a Cupratelike One through Heterostructuring

P. Hansmann; Xiaoping Yang; A. Toschi; G. Khaliullin; O. K. Andersen; K. Held

doi:10.1103/PhysRevLett.103.016401

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Turning a Nickelate Fermi Surface into a Cupratelike One through Heterostructuring

P. Hansmann, Xiaoping Yang, A. Toschi, G. Khaliullin, O. K. Andersen, K. Held

DOI 10.1103/PhysRevLett.103.016401 · Physical Review Letters

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Abstract

Using the local density approximation and its combination with dynamical mean-field theory, we show that electronic correlations induce a single-sheet, cupratelike Fermi surface for hole-doped 1/1 LaNiO3/LaAlO3 heterostructures, even though both eg orbitals contribute to it. The Ni 3d3z2−1 orbital plays the role of the axial Cu 4s-like orbital in the cuprates. These two results indicate that “orbital engineering” by means of heterostructuring should be possible. As we also find strong antiferromagnetic correlations, the low-energy electronic and spin excitations in nickelate heterostructures resemble those of high-temperature cuprate superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
LaNiO3/LaAlO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown