Latent Instabilities in Metallic LaNiO3 Films by Strain Control of Fermi-Surface Topology

Abstract

Strain control is one of the most promising avenues to search for new emergent phenomena in transition-metal-oxide films. Here, we investigate the strain-induced changes of electronic structures in strongly correlated LaNiO3 (LNO) films, using angle-resolved photoemission spectroscopy and the dynamical mean-field theory. The strongly renormalized eg-orbital bands are systematically rearranged by misfit strain to change its fermiology. As tensile strain increases, the hole pocket centered at the A point elongates along the kz-axis and seems to become open, thus changing Fermi-surface (FS) topology from three- to quasi-two-dimensional. Concomitantly, the FS shape becomes flattened to enhance FS nesting. A FS superstructure with Q1 = (1/2,1/2,1/2) appears in all LNO films, while a tensile-strained LNO film has an additional Q2 = (1/4,1/4,1/4) modulation, indicating that some instabilities are present in metallic LNO films. Charge disproportionation and spin-density-wave fluctuations observed in other nickelates might be their most probable origins.

5 pages, 4 figures, including Supplemental Material

References in corpus (2)

• Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices
• Fermi surfaces, electron-hole asymmetry and correlation kink in a three-dimensional Fermi liquid LaNiO${}_3$

Cited by in corpus (12)

• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Physics of ultrathin films and heterostructures of rare earth nickelates
• Tuning the metal-insulator transition in d^1 and d^2 perovskites by epitaxial strain: a first principles-based study
• Design of $n$- and $p$-type oxide thermoelectrics in LaNiO${}_3$/SrTiO${}_3(001)$ superlattices exploiting interface polarity
• Tuning the metal-insulator transition in NdNiO3 heterostructures via Fermi surface instability and spin-fluctuations
• Antiferromagnetic metal phase in an electron-doped rare-earth nickelate
• Anomalous electron transport in epitaxial NdNiO${}_3$ films
• Resonant inelastic x-ray scattering study of bond order and spin excitations in nickelate thin-film structures
• Electronic structure of buried LaNiO3 layers in (111)-oriented LaNiO3/LaMnO3 superlattices probed by soft x-ray ARPES
• Optical properties of LaNiO3 films tuned from compressive to tensile strain
• PERSPECTIVE: Emergent phases in rare earth nickelate heterostructures
• Hard x-ray photoemission study on strain effect in LaNiO${}_3$ thin films