Long-Range Magnetic Order in Structurally Embedded Mesospin Metamaterials
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arXiv
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| Format: | Preprint |
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2025
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| author | Vantaraki, Christina Bikondoa, Oier Grassi, Matías P. Ojha, Brindaban Stamatelatos, Alkaios Kwiatek-Maroszek, Natalia Orti, Miguel Angel Niño Foerster, Michael Saerbeck, Thomas Primetzhofer, Daniel Wolff, Max Jaouen, Nicolas Hase, Thomas P. A. Kapaklis, Vassilios |
| author_facet | Vantaraki, Christina Bikondoa, Oier Grassi, Matías P. Ojha, Brindaban Stamatelatos, Alkaios Kwiatek-Maroszek, Natalia Orti, Miguel Angel Niño Foerster, Michael Saerbeck, Thomas Primetzhofer, Daniel Wolff, Max Jaouen, Nicolas Hase, Thomas P. A. Kapaklis, Vassilios |
| contents | Engineered assemblies of interacting magnetic elements-magnetic metamaterials-provide a powerful route to tailor collective magnetic order and dynamics. By structuring matter at the mesoscale, they bridge atomic magnetism and macroscopic functionality, enabling emergent behaviour inaccessible in conventional materials. However, realizing large-area metamaterials that combine high morphological uniformity with intrinsic long-range order has remained challenging, largely due to the structural disorder inherent to lithographic fabrication. Here we demonstrate a scalable route to structurally and magnetically coherent metamaterials by embedding iron-ions to form mesospins within a non-magnetic thin film palladium host matrix. Using controlled implantation, we realize morphologically uniform arrays that spontaneously develop extended antiferromagnetic order in the as-fabricated state - without the need of external annealing or field cycling. Resonant X-ray scattering and microscopy reveal sharp magnetic Bragg peaks modulated by the mesospin form factor, evidencing long-range antiferromagnetic order coupled to structural coherence. This embedded architecture establishes a platform for exploring coherent spin-photon interactions and functional X-ray scattering in magnetic metamaterials free from lithographic topography and disorder. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_15483 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Long-Range Magnetic Order in Structurally Embedded Mesospin Metamaterials Vantaraki, Christina Bikondoa, Oier Grassi, Matías P. Ojha, Brindaban Stamatelatos, Alkaios Kwiatek-Maroszek, Natalia Orti, Miguel Angel Niño Foerster, Michael Saerbeck, Thomas Primetzhofer, Daniel Wolff, Max Jaouen, Nicolas Hase, Thomas P. A. Kapaklis, Vassilios Mesoscale and Nanoscale Physics Materials Science Optics Engineered assemblies of interacting magnetic elements-magnetic metamaterials-provide a powerful route to tailor collective magnetic order and dynamics. By structuring matter at the mesoscale, they bridge atomic magnetism and macroscopic functionality, enabling emergent behaviour inaccessible in conventional materials. However, realizing large-area metamaterials that combine high morphological uniformity with intrinsic long-range order has remained challenging, largely due to the structural disorder inherent to lithographic fabrication. Here we demonstrate a scalable route to structurally and magnetically coherent metamaterials by embedding iron-ions to form mesospins within a non-magnetic thin film palladium host matrix. Using controlled implantation, we realize morphologically uniform arrays that spontaneously develop extended antiferromagnetic order in the as-fabricated state - without the need of external annealing or field cycling. Resonant X-ray scattering and microscopy reveal sharp magnetic Bragg peaks modulated by the mesospin form factor, evidencing long-range antiferromagnetic order coupled to structural coherence. This embedded architecture establishes a platform for exploring coherent spin-photon interactions and functional X-ray scattering in magnetic metamaterials free from lithographic topography and disorder. |
| title | Long-Range Magnetic Order in Structurally Embedded Mesospin Metamaterials |
| topic | Mesoscale and Nanoscale Physics Materials Science Optics |
| url | https://arxiv.org/abs/2511.15483 |