A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State
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arXiv
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| Auteurs principaux: | , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912342563880960 |
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| author | Wood, G. D. A. Stewart, J. R. Mayoh, D. A. Paddison, J. A. M. Bouaziz, J. Tobin, S. M. Petrenko, O. A. Lees, M. R. Manuel, P. Staunton, J. B. Balakrishnan, G. |
| author_facet | Wood, G. D. A. Stewart, J. R. Mayoh, D. A. Paddison, J. A. M. Bouaziz, J. Tobin, S. M. Petrenko, O. A. Lees, M. R. Manuel, P. Staunton, J. B. Balakrishnan, G. |
| contents | Understanding the formation of skyrmions in centrosymmetric materials is a problem of fundamental and technological interest. GdRu2Si2 is one such candidate material which has been shown to host a variety of multi-Q magnetic structures, including in zero-field. Here, inelastic neutron scattering is used to measure the spin excitations in the field-polarized phase of GdRu2Si2. Linear spin wave theory and a method of interaction invariant path analysis are used to derive a Hamiltonian accounting for the observed spectra, and comparisons to \textit{ab initio} calculations are made. No evidence for anisotropic or higher order-exchange terms beyond bilinear Heisenberg exchange is found. This is discussed in the context of the multi-Q states existing at lower fields, for which these types of terms have previously been conceived to be significant in the formation of multi-Q ground states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01201 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State Wood, G. D. A. Stewart, J. R. Mayoh, D. A. Paddison, J. A. M. Bouaziz, J. Tobin, S. M. Petrenko, O. A. Lees, M. R. Manuel, P. Staunton, J. B. Balakrishnan, G. Strongly Correlated Electrons Understanding the formation of skyrmions in centrosymmetric materials is a problem of fundamental and technological interest. GdRu2Si2 is one such candidate material which has been shown to host a variety of multi-Q magnetic structures, including in zero-field. Here, inelastic neutron scattering is used to measure the spin excitations in the field-polarized phase of GdRu2Si2. Linear spin wave theory and a method of interaction invariant path analysis are used to derive a Hamiltonian accounting for the observed spectra, and comparisons to \textit{ab initio} calculations are made. No evidence for anisotropic or higher order-exchange terms beyond bilinear Heisenberg exchange is found. This is discussed in the context of the multi-Q states existing at lower fields, for which these types of terms have previously been conceived to be significant in the formation of multi-Q ground states. |
| title | A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2501.01201 |