Speaker: Jiarui Li, MIT
Program Description:
Rare-earth nickelates (RENiO3) feature complex ground-state electronic and magnetic structures due to the interplay between multiple degrees of freedom. I will present my recent work using X-ray resonant scattering, imaging and spectroscopy to reveal the ground state properties of RENiO3. In the first part of the talk, we studied the spatial distribution of the antiferromagnetic domains by a resonant soft X-ray scattering nanoprobe setup and unveiled a scale-invariant antiferromagnetic domain texture. In the second part, we explored the electron-doping evolution of the magnetic and electronic ground state properties of oxygen-deficient RENiO3-x and identified a sharp reversible switching of antiferromagnetism.
Reference:
J. Li, et al. “Scale-invariant magnetic textures in the strongly correlated oxide NdNiO3.” Nature comm. 10, 4568 (2019).
J. Li, et al. “Sudden Collapse of Magnetic Order in Oxygen-Deficient Nickelate Films.” PRL 126, 187602 (2021).
