Electronic structure of buried LaNiO3 layers in (111)-oriented LaNiO3/LaMnO3 superlattices probed by soft x-ray ARPES

Abstract

Taking advantage of the large electron escape depth of soft x-ray angle resolved photoemission spectroscopy we report electronic structure measurements of (111)-oriented [LaNiO3/LaMnO3] superlattices and LaNiO3 epitaxial films. For thin films we observe a 3D Fermi surface with an electron pocket at the Brillouin zone center and hole pockets at the zone vertices. Superlattices with thick nickelate layers present a similar electronic structure. However, as the thickness of the LaNiO3 is reduced the superlattices become insulating. These heterostructures do not show a marked redistribution of spectral weight in momentum space but exhibit a pseudogap of 50 meV.

References in corpus (21)

• Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures
• Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices
• Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices
• Metal-insulator transition in ultrathin LaNiO3 films
• Physics of ultrathin films and heterostructures of rare earth nickelates
• Fermi Surface reconstruction in the CDW state of CeTe3 observed by photoemission
• Possible interaction driven topological phases in (111) bilayers of LaNiO3
• Metal-insulator transition in a two-band model for the perovskite nickelates
• Fermi surfaces, electron-hole asymmetry and correlation kink in a three-dimensional Fermi liquid LaNiO${}_3$
• Electronic structure of (LaNiO${}_3$)${}_2$/(LaAlO${}_3$)${}_N$ heterostructures grown along [111]
• Confinement-driven transitions between topological and Mott phases in (LaNiO3)${}_N$/(LaAlO3)${}_M$(111) superlattices
• Onset of metallic behavior in strained (LaNiO3)n/(SrMnO3)2 superlattices
• Orbital Polarization in Strained LaNiO${}_3$: Structural Distortions and Correlation Effects
• Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate
• Tuning the metal-insulator transition in NdNiO3 heterostructures via Fermi surface instability and spin-fluctuations
• Quantifying electronic correlation strength in a complex oxide: a combined DMFT and ARPES study of LaNiO${}_3$
• Latent Instabilities in Metallic LaNiO3 Films by Strain Control of Fermi-Surface Topology
• Strain-controlled band engineering and self-doping in ultrathin LaNiO${}_3$ films
• Spin-filter tunnel junction with matched Fermi surfaces
• Empirical relationship between x-ray photoemission spectra and electrical conductivity in a colossal magnetoresistive manganite La_{1-x}Sr_{x}MnO_{3}
• Dimensionality-tuned electronic structure of nickelate superlattices explored by soft-x-ray angle resolved photoelectron spectroscopy

Cited by in corpus (5)

• Band Structure and Spin-Orbital Texture of the (111)-KTaO3 Two-Dimensional Electron Gas
• Electronic structure of a graphene-like artificial crystal of $NdNi{O}_3$
• A laser-ARPES study of LaNiO3 thin films grown by sputter deposition
• Emergent half-metal with mixed structural order in (111)-oriented (LaMnO${}_3$)${}_{2n}$|(SrMnO${}_3$)${}_n$ superlattices
• Electronic band structure of (111) $SrRu{O}_3$ thin film$-$an angle-resolved photoemission spectroscopy study