Giant Superstructure in Infinite-Layer Nickelate
Author Information
Author(s): Jens Oppliger, Julia Küspert, Ann-Christin Dippel, Martin v. Zimmermann, Olof Gutowski, Xiaolin Ren, Xingjiang Zhou, Zhihai Zhu, Ruggero Frison, Qisi Wang, Leonardo Martinelli, Izabela Biało, Johan Chang
Primary Institution: Physik-Institut, Universität Zürich, Zürich, Switzerland
Hypothesis
How does in-situ temperature annealing affect the structural properties of the infinite-layer nickelate PrNiO2+x?
Conclusion
The study reveals a giant unit-cell superstructure in PrNiO2+x that emerges upon heating and can be quenched at lower temperatures.
Supporting Evidence
- The study demonstrates a rare period-six in-plane symmetry and a period-four symmetry in the out-of-plane direction.
- The giant unit-cell superstructure persists over a large temperature range and can be quenched.
- High-energy grazing-incidence x-ray diffraction covers a large scattering volume across many Brillouin zones.
Takeaway
When we heat a special material called PrNiO2+x, it changes shape in a big way, and we can freeze that shape by cooling it down.
Methodology
High-energy grazing-incidence x-ray diffraction was used to study the structural changes in PrNiO2+x during in-situ temperature annealing.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website