Double-Q ground state with topological charge stripes in the centrosymmetric 
skyrmion candidate GdRu2Si2

Wood, G. D. A.; Khalyavin, D. D.; Mayoh, D. A.; Bouaziz, J.; Hall, A. E.; Holt, S.; Orlando, F.; Manuel, P.; Blügel, S.; Staunton, J. B.; Petrenko, O. A.; Lees, M. R.; Balakrishnan, G.

doi:10.1103/PhysRevB.107.L180402

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学術論文

Double-Q ground state with topological charge stripes in the centrosymmetric skyrmion candidate GdRu₂Si₂

MPS-Authors

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Holt, S.
Faculty of Engineering and Physical Sciences, University of Southampton;
Computational Science, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

https://arxiv.org/abs/2304.14896
(プレプリント)

https://doi.org/10.1103/PhysRevB.107.L180402
(出版社版)

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PhysRevB.107.L180402.pdf
(出版社版), 977KB

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SI.pdf
(付録資料), 256KB

引用

Wood, G. D. A., Khalyavin, D. D., Mayoh, D. A., Bouaziz, J., Hall, A. E., Holt, S., Orlando, F., Manuel, P., Blügel, S., Staunton, J. B., Petrenko, O. A., Lees, M. R., & Balakrishnan, G. (2023). Double-Q ground state with topological charge stripes in the centrosymmetric skyrmion candidate GdRu₂Si₂. Physical Review B, 107(18):. doi:10.1103/PhysRevB.107.L180402.

引用: https://hdl.handle.net/21.11116/0000-000D-1766-7

要旨

GdRu₂Si₂ is a centrosymmetric magnet in which a skyrmion lattice has recently been discovered. Here, we investigate the magnetic structure of the zero-field ground state using neutron diffraction on single crystal and polycrystalline ¹⁶⁰GdRu₂Si₂. In addition to observing the principal propagation vectors q₁ and q₂, we discover higher-order magnetic satellites, notably q₁+2q₂. The appearance of these satellites is explained within the framework of a double-Q constant-moment solution. Using powder diffraction, we implement a quantitative refinement of this model. This structure, which contains vortexlike motifs, is shown to have a one-dimensional topological charge density.