Néel Skyrmion Bubbles in La<sub>0.7</sub>Sr<sub>0.3</sub>Mn<sub>1-<i>x</i></sub>Ru<sub><i>x</i></sub>O<sub>3</sub> Multilayers.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 37018631.
- Also identified by DOI 10.1021/acs.nanolett.3c00693.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Ferromagnetic La<sub>0.7</sub>Sr<sub>0.3</sub>Mn<sub>1-<i>x</i></sub>Ru<sub><i>x</i></sub>O<sub>3</sub> epitaxial multilayers with controlled variation of the Ru/Mn content were synthesized to engineer canted magnetic anisotropy and variable exchange interactions, and to explore the possibility of generating a Dzyaloshinskii-Moriya interaction. The ultimate aim of the multilayer design is to provide the conditions for the formation of domains with nontrivial magnetic topology in an oxide thin film system. Employing magnetic force microscopy and Lorentz transmission electron microscopy in varying perpendicular magnetic fields, magnetic stripe domains separated by Néel-type domain walls as well as Néel skyrmions smaller than 100 nm in diameter were observed. These findings are consistent with micromagnetic modeling, taking into account a sizable Dzyaloshinskii-Moriya interaction arising from the inversion symmetry breaking and possibly from strain effects in the multilayer system.