Theory of momentum-resolved magnon electron energy loss spectra: The case of Yttrium Iron Garnet
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| _version_ | 1866929248525090816 |
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| author | Nascimento, Julio A. do Hasnip, Phil J. Cavill, S. A. Cossu, Fabrizio Kepaptsoglou, Demie Ramasse, Quentin M. Kerrigan, Adam Lazarov, Vlado K. |
| author_facet | Nascimento, Julio A. do Hasnip, Phil J. Cavill, S. A. Cossu, Fabrizio Kepaptsoglou, Demie Ramasse, Quentin M. Kerrigan, Adam Lazarov, Vlado K. |
| contents | We explore the inelastic spectra of electrons impinging in a magnetic system. The methodology here presented is intended to highlight the charge-dependent interaction of the electron beam in a STEM-EELS experiment, and the local vector potential generated by the magnetic lattice. This interaction shows an intensity $10^{-2}$ smaller than the purely spin interaction, which is taken to be functionally the same as in the inelastic neutron experiment. On the other hand, it shows a strong scattering vector dependence ($κ^{-4}$) and a dependence with the relative orientation between the probe wavevector and the local magnetic moments of the solid. We present YIG as a case study due to its high interest by the community. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12302 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Theory of momentum-resolved magnon electron energy loss spectra: The case of Yttrium Iron Garnet Nascimento, Julio A. do Hasnip, Phil J. Cavill, S. A. Cossu, Fabrizio Kepaptsoglou, Demie Ramasse, Quentin M. Kerrigan, Adam Lazarov, Vlado K. Materials Science We explore the inelastic spectra of electrons impinging in a magnetic system. The methodology here presented is intended to highlight the charge-dependent interaction of the electron beam in a STEM-EELS experiment, and the local vector potential generated by the magnetic lattice. This interaction shows an intensity $10^{-2}$ smaller than the purely spin interaction, which is taken to be functionally the same as in the inelastic neutron experiment. On the other hand, it shows a strong scattering vector dependence ($κ^{-4}$) and a dependence with the relative orientation between the probe wavevector and the local magnetic moments of the solid. We present YIG as a case study due to its high interest by the community. |
| title | Theory of momentum-resolved magnon electron energy loss spectra: The case of Yttrium Iron Garnet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2401.12302 |