Freestanding nickelate membrane

Perovskite nickelates have been heavily studied as a textbook example of how the interplay of structural, orbital, and charge/spin degrees of freedom drive strongly correlated phenomena in 3d transition metal oxides. The recent discovery of superconductivity in the infinite-layer nickelate thin films has provided the field another d⁹ electron configuration similar to cuprates. Releasing nickelate thin films from the substrate constraint would provide a novel experimental avenue to explore the strain tunability of the metal-insulator transition in the perovskite nickelates and superconductivity in the infinite-layer nickelates. In this talk, we will discuss our progress on synthesizing freestanding perovskite nickelate membranes and bridging them to the infinite-layer nickelate phase.