paper

Comparative Many-Body Study of PrNiO and NdNiO

arXiv:2010.02856 · doi:10.1103/PhysRevB.102.245130

Abstract

We study the many-body electronic structure of the stoichiometric and electron-doped trilayer nickelate PrNiO in comparison to that of the stoichiometric and hole-doped infinite layer nickelate NdNiO within the framework of density functional plus dynamical mean field theory, noting that PrNiO has the same nominal carrier concentration as NdNiO doped to a level of 1/3 holes/Ni. We find that the correlated Ni- shells of both of these low valence nickelates have similar many-body configurations with correlations dominated by the orbital. Additionally, when compared at the same nominal carrier concentration, the materials exhibit similar many-body electronic structures, self energies, and correlation strengths. Compared to cuprates, these materials are closer to the Mott-Hubbard regime due to their larger charge transfer energies. Moreover, doping involves the charge reservoir provided by the rare earth electrons, as opposed to cuprates where it is realized via the oxygen electrons.

References in corpus (36)

Cited by in corpus (35)