Cubic double perovskites host noncoplanar spin textures

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

doi:10.1038/s41535-024-00650-6

Cubic double perovskites host noncoplanar spin textures

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

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3 Scopus citations

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.

Original language	English
Article number	48
Journal	npj Quantum Materials
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41535-024-00650-6
State	Published - Dec 2024

Funding

This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
Basic Energy Sciences
Division of Materials Sciences and Engineering
Oak Ridge National Laboratory
U.S. Department of Energy
Office of Science

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title = "Cubic double perovskites host noncoplanar spin textures",

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.",

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

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month = dec,

doi = "10.1038/s41535-024-00650-6",

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AU - Paddison, Joseph A.M.

AU - Zhang, Hao

AU - Yan, Jiaqiang

AU - Cliffe, Matthew J.

AU - McGuire, Michael A.

AU - Do, Seung Hwan

AU - Gao, Shang

AU - Stone, Matthew B.

AU - Dahlbom, David

AU - Barros, Kipton

AU - Batista, Cristian D.

AU - Christianson, Andrew D.

N1 - Publisher Copyright: © UT-Battelle, LLC and Hao Zhang, Matthew Cliffe, David Dahlbom, Kipton Barros, Cristian Batista 2024.

PY - 2024/12

Y1 - 2024/12

N2 - 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.

AB - 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.

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ER -

Cubic double perovskites host noncoplanar spin textures

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