Doping evolution of the Mott–Hubbard landscape in infinite-layer nickelates
Abstract
Copper-based (cuprate) oxides are not only the original but also one of the best-studied families of “high-temperature” superconductors. With nominally identical crystal structure and electron count, nickel-based (nickelate) compounds have been widely pursued for decades as a possible analog to the cuprates. The recent demonstration of superconductivity in nickelate thin films has provided an experimental platform to explore the possible connections between the copper- and nickel-based superconductors. Here, we perform highly localized spectroscopic measurements to reveal a number of key differences between the two systems, particularly with regard to the hybridization between the O and metal (Cu or Ni) orbitals.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 04, 2021
- Source ID
- 10.1073/pnas.2007683118
Entities
People
- Bai Yang Wang
- Berit H. Goodge
- D F Li
- George A. Sawatzky
- Harold Y. Hwang
- Kyuho Lee
- Lena F Kourkoutis
- Motoki Osada
Organizations
- Cornell University
- Gordon and Betty Moore Foundation
- Stanford University
- United States Department of Defense
- United States Department of Energy
- University of British Columbia