Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session D71: Correlated Electronic Phenomena in Complex Oxide Thin Films and Interfaces
3:00 PM–6:00 PM,
Monday, March 14, 2022
Room: Hyatt Regency Hotel -Jackson Park C
Sponsoring Unit: DMP
Chair: Ankit Disa, Max Planck - NYC Center for Non-equilibrium Quantum Phenomena
Abstract: D71.00008 : Electronic coupling in nickelate-based superlattices
4:48 PM–5:24 PM
(Univ of Geneva)
Claribel Dominguez Ordonez
(University of Geneva)
(Univ of Geneva)
To study how the magnetic order evolves in this complex multicomponent system, we combined resonant x-ray magnetic scattering and muon spin relaxation experiments. We found that, similar to what is observed in the resistivity measurements, these superlattices display either two magnetic transitions or one depending on the thickness of the individual layers. The critical length scale over which antiferromagnetic-paramagnetic phase coexistence can occur is found to be larger than the critical length scale for insulating-metallic phase coexistence. This behavior can be explained in terms of a phase boundary cost between magnetic and non-magnetic phases.
Our simple model system allows us to better understand the coupling of the metal-to-insulator and magnetic transitions in systems sharing identical order parameters.
 S. Catalano, et al. Rep. Prog. Phys., (2017).
 B. Mundet, et al. Nano Lett., (2021).
 Domínguez, C. et al. Nat. Mat., (2020).
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