Origin of a topotactic reduction effect for superconductivity in infinite-layer nickelates

S Zeng, CS Tang, Z Luo, LE Chow, ZS Lim… - Physical Review Letters, 2024‏ - APS
Topotactic reduction utilizing metal hydrides as reagents has emerged as an effective
approach to achieve exceptionally low oxidization states of metal ions and unconventional …

Absence of hydrogen insertion into highly crystalline superconducting infinite layer nickelates

M Gonzalez, A Ievlev, K Lee, W Kim, Y Yu, J Fowlie… - Physical Review …, 2024‏ - APS
The discovery of superconductivity in the infinite layer nickelates introduced a materials
system analogous to the cuprates for the study of unconventional superconductivity. The …

Irrelevance of 1H composition to the superconductivity in the infinite-layer nickelates: judging from the MeV energy scale

JC Nie, XY Chen, Y Bian, XY Wang, TN Shao… - arxiv preprint arxiv …, 2024‏ - arxiv.org
The discovery of the superconductivity in the infinite-layer nickelates, as topotactically
reduced from their respective perovskite percussors via co-annealing with CaH2, extends …

Amalgams as Hydrogen-Free Reducing Agents for Topotactic Oxide Deintercalation

TJ Whoriskey, G Bassen, B Wilfong… - Chemistry of …, 2024‏ - ACS Publications
Here, we report the development of a hydrogen-free, topotactic oxygen deintercalation
technique using alkali metal aluminum gallium amalgams (A x AlGa, where A= Li, Na, K) …