Controlling 4f antiferromagnetic dynamics via itinerant electronic susceptibility
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arXiv
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| Hauptverfasser: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Lee, Sang-Eun Windsor, Yoav William Zahn, Daniela Kraiker, Alexej Kummer, Kurt Kliemt, Kristin Krellner, Cornelius Schüßler-Langeheine, Christian Pontius, Niko Staub, Urs Vyalikh, Denis V. Ernst, Arthur Rettig, Laurenz |
| author_facet | Lee, Sang-Eun Windsor, Yoav William Zahn, Daniela Kraiker, Alexej Kummer, Kurt Kliemt, Kristin Krellner, Cornelius Schüßler-Langeheine, Christian Pontius, Niko Staub, Urs Vyalikh, Denis V. Ernst, Arthur Rettig, Laurenz |
| contents | Optical manipulation of magnetism holds promise for future ultrafast spintronics, especially with lanthanides and their huge, localized 4f magnetic moments. These moments interact indirectly via the conduction electrons (RKKY exchange), influenced by interatomic orbital overlap, and the conduction electron susceptibility. Here, we study this influence in a series of 4f antiferromagnets, GdT2Si2 (T=Co, Rh, Ir), using ultrafast resonant X-ray diffraction. We observe a twofold increase in ultrafast angular momentum transfer between the materials, originating from modifications in the conduction electron susceptibility, as confirmed by first-principles calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_12119 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Controlling 4f antiferromagnetic dynamics via itinerant electronic susceptibility Lee, Sang-Eun Windsor, Yoav William Zahn, Daniela Kraiker, Alexej Kummer, Kurt Kliemt, Kristin Krellner, Cornelius Schüßler-Langeheine, Christian Pontius, Niko Staub, Urs Vyalikh, Denis V. Ernst, Arthur Rettig, Laurenz Materials Science Strongly Correlated Electrons Optical manipulation of magnetism holds promise for future ultrafast spintronics, especially with lanthanides and their huge, localized 4f magnetic moments. These moments interact indirectly via the conduction electrons (RKKY exchange), influenced by interatomic orbital overlap, and the conduction electron susceptibility. Here, we study this influence in a series of 4f antiferromagnets, GdT2Si2 (T=Co, Rh, Ir), using ultrafast resonant X-ray diffraction. We observe a twofold increase in ultrafast angular momentum transfer between the materials, originating from modifications in the conduction electron susceptibility, as confirmed by first-principles calculations. |
| title | Controlling 4f antiferromagnetic dynamics via itinerant electronic susceptibility |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2404.12119 |