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Magnon Band Analysis of the Skyrmion Host GdRu2Si2

Determination of the effective magnetic exchange Hamiltonian of the centrosymmetric skyrmion-hosting compound GdRu2Si2 by fitting linear spin-wave theory to inelastic-neutron-scattering magnon spectra in the field-polarized phase. The analysis finds only bilinear Heisenberg exchange, with no measurable anisotropic or higher-order exchange, constraining explanations for the material's multi-Q magnetic states.

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A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State G. D. A. Wood,1, 2, ∗J. R.

Primary condensed-matter research measuring the spin-wave (magnon) excitations of the centrosymmetric skyrmion-host magnet GdRu2Si2 in its field-polarized phase using inelastic neutron scattering. Li…