Laser-induced real-space topology control of spin wave resonances
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2023
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915026674122752 |
|---|---|
| author | Titze, Tim Koraltan, Sabri Schmidt, Timo Möller, Marcel Bruckner, Florian Abert, Claas Suess, Dieter Ropers, Claus Steil, Daniel Albrecht, Manfred Mathias, Stefan |
| author_facet | Titze, Tim Koraltan, Sabri Schmidt, Timo Möller, Marcel Bruckner, Florian Abert, Claas Suess, Dieter Ropers, Claus Steil, Daniel Albrecht, Manfred Mathias, Stefan |
| contents | Femtosecond laser excitation of materials that exhibit magnetic spin textures promises advanced magnetic control via the generation of ultrafast and non-equilibrium spin dynamics. We explore such possibilities in ferrimagnetic [Fe(0.35 nm)/Gd(0.40 nm)]$_{160}$ multilayers, which host a rich diversity of magnetic textures from stripe domains at low magnetic fields, a dense bubble/skyrmion lattice at intermediate fields, and a single domain state for high magnetic fields. Using femtosecond magneto-optics, we observe distinct coherent spin wave dynamics in response to a weak laser excitation allowing us to unambiguously identify the different magnetic spin textures. Moreover, employing strong laser excitation we show that we achieve versatile control of the coherent spin dynamics via non-equilibrium and ultrafast transformation of magnetic spin textures by both creating and annihilating bubbles/skyrmions. We corroborate our findings by micromagnetic simulations and by Lorentz transmission electron microscopy before and after laser exposure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_12956 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Laser-induced real-space topology control of spin wave resonances Titze, Tim Koraltan, Sabri Schmidt, Timo Möller, Marcel Bruckner, Florian Abert, Claas Suess, Dieter Ropers, Claus Steil, Daniel Albrecht, Manfred Mathias, Stefan Materials Science Mesoscale and Nanoscale Physics Femtosecond laser excitation of materials that exhibit magnetic spin textures promises advanced magnetic control via the generation of ultrafast and non-equilibrium spin dynamics. We explore such possibilities in ferrimagnetic [Fe(0.35 nm)/Gd(0.40 nm)]$_{160}$ multilayers, which host a rich diversity of magnetic textures from stripe domains at low magnetic fields, a dense bubble/skyrmion lattice at intermediate fields, and a single domain state for high magnetic fields. Using femtosecond magneto-optics, we observe distinct coherent spin wave dynamics in response to a weak laser excitation allowing us to unambiguously identify the different magnetic spin textures. Moreover, employing strong laser excitation we show that we achieve versatile control of the coherent spin dynamics via non-equilibrium and ultrafast transformation of magnetic spin textures by both creating and annihilating bubbles/skyrmions. We corroborate our findings by micromagnetic simulations and by Lorentz transmission electron microscopy before and after laser exposure. |
| title | Laser-induced real-space topology control of spin wave resonances |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2309.12956 |