Cubic double perovskites host noncoplanar spin textures

Paddison, Joseph A.M.; Zhang, Hao; Yan, Jiaqiang; Cliffe, Matthew J.; McGuire, Michael A.; Do, Seung Hwan; Gao, Shang; Stone, Matthew B.; Dahlbom, David; Barros, Kipton; Batista, Cristian D.; Christianson, Andrew D.

Abstract

Magnetic materials with noncoplanar magnetic structures can show unusual physical properties driven by nontrivial topology. Topologically-active states are often multi-q structures, which are challenging to stabilize in models and to identify in materials. Here, we use inelastic neutron-scattering experiments to show that the insulating double perovskites Ba2YRuO6 and Ba2LuRuO6 host a noncoplanar 3-q structure on the face-centered cubic lattice. Quantitative analysis of our neutron-scattering data reveals that these 3-q states are stabilized by biquadratic interactions. Our study identifies double perovskites as a highly promising class of materials to realize topological magnetism, elucidates the stabilization mechanism of the 3-q state in these materials, and establishes neutron spectroscopy on powder samples as a valuable technique to distinguish multi-q from single-q states, facilitating the discovery of topologically-nontrivial magnetic materials.

Citation

Paddison, J. A., Zhang, H., Yan, J., Cliffe, M. J., McGuire, M. A., Do, S. H., Gao, S., Stone, M. B., Dahlbom, D., Barros, K., Batista, C. D., & Christianson, A. D. (2024). Cubic double perovskites host noncoplanar spin textures. npj Quantum Materials, 9(1), Article 48. https://doi.org/10.1038/s41535-024-00650-6

• Journal Article Type: Article
• Acceptance Date: Apr 19, 2024
• Online Publication Date: Jun 6, 2024
• Publication Date: Jun 6, 2024
• Deposit Date: Jun 8, 2024
• Publicly Available Date: Jun 10, 2024
• Journal: npj Quantum Materials
• Print ISSN: 2397-4648
• Electronic ISSN: 2397-4648
• Publisher: Nature Research
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 1
• Article Number: 48
• DOI: https://doi.org/10.1038/s41535-024-00650-6
• Keywords: Magnetic properties and materials
• Public URL: https://nottingham-repository.worktribe.com/output/35734979
• Publisher URL: https://www.nature.com/articles/s41535-024-00650-6