We review the electronic structure of nickelate superconductors with and without effects of
electronic correlations. As a minimal model, we identify the one-band Hubbard model for the …

The newly discovered nickelate superconductors so far only exist in epitaxial thin films
synthesized by a topotactic reaction with metal hydrides. This method changes the …

Hydrogen in materials has attracted tremendous interest as its incorporation leads to
significant alterations in nanoscale structure, composition, and chemistry, impacting …

Superconducting nickelates appear to be difficult to synthesize. Since the chemical
reduction of ABO 3 [rare earth (A), transition metal (B)] with CaH 2 may result in both ABO 2 …

Topotactic reduction utilizing metal hydrides as reagents has emerged as an effective
approach to achieve exceptionally low oxidization states of metal ions and unconventional …

Perovskite oxides AB O3 continue to be a major focus in materials science. Of particular
interest is the interplay between A and B cations as exemplified by intersite charge transfer …

The discovery of superconductivity in the infinite layer nickelates introduced a materials
system analogous to the cuprates for the study of unconventional superconductivity. The …

The discovery of nickelates superconductor creates exciting opportunities to unconventional
superconductivity. However, its synthesis is challenging and only a few groups worldwide …

Transition-metal oxyhydrides are of considerable current interest due to the unique features
of the hydride anion, most notably the absence of valence p orbitals. This feature …

In this work, 40 nm-thick films of SrVO 3 (SVO) grown by Pulsed Laser Deposition (PLD) on
SrTiO 3 substrates are studied by X-Ray Photoelectron Spectroscopy (XPS). We develop …