Quantum mechanics

Catalysis

Fermi level

Cuprate

Metallurgy

Materials science

Coupling (piping)

Biochemistry

Mathematical optimization

Hamiltonian (control theory)

Atomic orbital

Non-blocking I/O

Physics

Mott insulator

Mathematics

Doping

Superconductivity

Condensed matter physics

Chemistry

Electron

Fermi Gamma-ray Space Telescope

Physical review. B./Physical review. B

Motivated by the discovery of the nickelate superconductor Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_{2}$, the authors construct an effective low-energy Hamiltonian for the parent compound NdNiO${}_{2}$, which is found to be strongly correlated. While high-T${}_{c}$ superconductivity emerges near the Mott-insulating phase in the cuprates, NdNiO${}_{2}$ is not a Mott insulator, because the 3$d$ ${x}^{2}$-${y}^{2}$ band of nickel is self-doped. The authors propose a route for the design of novel nickelates where self-doping is suppressed. If synthesized, such nickelates would provide a playground for the exploration of high-T${}_{c}$ superconductivity.

Formation of a two-dimensional single-component correlated electron system and band engineering in the nickelate superconductor <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>NdNiO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>

Formation of a two-dimensional single-component correlated electron system and band engineering in the nickelate superconductor NdNiO2