Magnetic excitations beyond the single- and double-magnons
A photon carrying one unit of angular momentum can change the spin angular momentum of a magnetic system with one unit (ΔMs = ±1) at most. This implies that a two-photon scattering process can manipulate the spin angular momentum of the magnetic system with a maximum of two units. Herein we describe...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 May 2023
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| In: |
Nature Communications
Year: 2023, Jahrgang: 14, Pages: 1-8 |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-023-38341-8 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/s41467-023-38341-8 Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/s41467-023-38341-8 
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| Verfasserangaben: | Hebatalla Elnaggar, Abhishek Nag, Maurits W. Haverkort, Mirian Garcia-Fernandez, Andrew Walters, Ru-Pan Wang, Ke-Jin Zhou & Frank de Groot |
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| 520 | |a A photon carrying one unit of angular momentum can change the spin angular momentum of a magnetic system with one unit (ΔMs = ±1) at most. This implies that a two-photon scattering process can manipulate the spin angular momentum of the magnetic system with a maximum of two units. Herein we describe a triple-magnon excitation in α-Fe2O3, which contradicts this conventional wisdom that only 1- and 2-magnon excitations are possible in a resonant inelastic X-ray scattering experiment. We observe an excitation at exactly three times the magnon energy, along with additional excitations at four and five times the magnon energy, suggesting quadruple and quintuple-magnons as well. Guided by theoretical calculations, we reveal how a two-photon scattering process can create exotic higher-rank magnons and the relevance of these quasiparticles for magnon-based applications. | ||
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| 700 | 1 | |a Garcia-Fernandez, Mirian |e VerfasserIn |4 aut | |
| 700 | 1 | |a Walters, Andrew |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wang, Ru-Pan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhou, Ke-Jin |e VerfasserIn |4 aut | |
| 700 | 1 | |a de Groot, Frank |e VerfasserIn |4 aut | |
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