Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet
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arXiv
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| Natura: | Preprint |
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2024
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| author | Levati, Valerio Vitali, Matteo Del Giacco, Andrea Pellizzi, Nicola Silvani, Raffaele Mavilla, Luca Ciaccarini Madami, Marco Biancardi, Irene Girardi, Davide Panzeri, Matteo Florio, Piero Cocconcelli, Maria Breitbach, David Pirro, Philipp Rovatti, Ludovica Lecis, Nora Maspero, Federico Bertacco, Riccardo Corrielli, Giacomo Osellame, Roberto Russo, Valeria Bassi, Andrea Li Tacchi, Silvia Petti, Daniela Albisetti, Edoardo |
| author_facet | Levati, Valerio Vitali, Matteo Del Giacco, Andrea Pellizzi, Nicola Silvani, Raffaele Mavilla, Luca Ciaccarini Madami, Marco Biancardi, Irene Girardi, Davide Panzeri, Matteo Florio, Piero Cocconcelli, Maria Breitbach, David Pirro, Philipp Rovatti, Ludovica Lecis, Nora Maspero, Federico Bertacco, Riccardo Corrielli, Giacomo Osellame, Roberto Russo, Valeria Bassi, Andrea Li Tacchi, Silvia Petti, Daniela Albisetti, Edoardo |
| contents | The exceptional magnetic, optical and phononic properties of Yttrium Iron Garnet (YIG) make it unique for spin-wave based and photonic applications. Yet, nanostructuring crystalline YIG and manipulating its magnetism in a non-destructive way is an outstanding challenge, and so far mostly limited to two-dimensional capabilities. Here, we show that irradiation of single-crystal YIG films with a focused UV laser drives a stable, giant enhancement of the perpendicular magnetic anisotropy, preserving the crystalline quality. This modulation is highly confined at the nanoscale in both the lateral and vertical directions, and its extension within the volume can be finely tuned with a continuous depth-control. By harnessing these three-dimensional anisotropy profiles, we demonstrate a large tuning of the spin-wave band structure, volume spatial localization, and non-reciprocity, realizing proof-of-principle 3D magnonic crystals. This straightforward, single-step, laser nanofabrication of three-dimensional magnetic systems based on crystalline YIG thin films opens the way to design novel functions in magnonic and magneto-optic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17722 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet Levati, Valerio Vitali, Matteo Del Giacco, Andrea Pellizzi, Nicola Silvani, Raffaele Mavilla, Luca Ciaccarini Madami, Marco Biancardi, Irene Girardi, Davide Panzeri, Matteo Florio, Piero Cocconcelli, Maria Breitbach, David Pirro, Philipp Rovatti, Ludovica Lecis, Nora Maspero, Federico Bertacco, Riccardo Corrielli, Giacomo Osellame, Roberto Russo, Valeria Bassi, Andrea Li Tacchi, Silvia Petti, Daniela Albisetti, Edoardo Materials Science Mesoscale and Nanoscale Physics The exceptional magnetic, optical and phononic properties of Yttrium Iron Garnet (YIG) make it unique for spin-wave based and photonic applications. Yet, nanostructuring crystalline YIG and manipulating its magnetism in a non-destructive way is an outstanding challenge, and so far mostly limited to two-dimensional capabilities. Here, we show that irradiation of single-crystal YIG films with a focused UV laser drives a stable, giant enhancement of the perpendicular magnetic anisotropy, preserving the crystalline quality. This modulation is highly confined at the nanoscale in both the lateral and vertical directions, and its extension within the volume can be finely tuned with a continuous depth-control. By harnessing these three-dimensional anisotropy profiles, we demonstrate a large tuning of the spin-wave band structure, volume spatial localization, and non-reciprocity, realizing proof-of-principle 3D magnonic crystals. This straightforward, single-step, laser nanofabrication of three-dimensional magnetic systems based on crystalline YIG thin films opens the way to design novel functions in magnonic and magneto-optic devices. |
| title | Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.17722 |