Publications in Scientific Journals:
P. Hansmann, X. Yang, A. Toschi, G. Khaliullin, O. K. Andersen, K. Held:
"Turning a Nickelate Fermi Surface into a Cupratelike One through Heterostructuring";
Physical Review Letters,
103
(2009),
016401-1
- 016401-4.
English 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.
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevLett.103.016401
Electronic version of the publication:
http://link.aps.org/doi/10.1103/PhysRevLett.103.016401
Created from the Publication Database of the Vienna University of Technology.