Sensitivity of electronic structure to crystal distortions in infinite-layered LaNiO2
Date
2025-01-23
Journal Title
Journal ISSN
Volume Title
Publisher
Physical Review B
Abstract
Recent observations of unconventional superconductivity (SC) in thin films of LaNiO2 (critical temperature 𝑇c≃ 10 K) and in bulk single crystals of La3Ni2O7 under pressure 𝑇c≃80K have cemented a long sought-after class of SC nickelates. In La1−𝑥Sr𝑥NiO2, SC appears only in films for reasons not understood. We perform a combination of experiments to probe the crystal structure and magnetic order in bulk LaNiO2 together with ab initio calculations of the electronic structure. We find that the infinite layers are naturally buckled out-of-plane. The electronic bands are largely unaffected by the buckling, but uniaxial compression along the 𝑐 axis may lead to a Lifshitz transition.
Description
This article was originally published in Physical Review B. The version of record is available at: https://doi.org/10.1103/PhysRevB.111.014518.
©2025 American Physical Society.
Keywords
structural properties, superconductivity, neutron scattering
Citation
Rathnayaka, S., S. Yano, J.-B. Morée, K. Kawashima, J. Akimitsu, C. M. Brown, J. Neuefeind, and D. Louca. “Sensitivity of Electronic Structure to Crystal Distortions in Infinite-Layered \mathrmLaNiO_2.” Phys. Rev. B 111, no. 1 (January 2025): 014518. https://doi.org/10.1103/PhysRevB.111.014518.