Angular-momentum-selective nanofocusing with Weyl semimetals
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917077279834112 |
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| author | Peluso, Marco De Martino, Alessandro Egger, Reinhold Buccheri, Francesco |
| author_facet | Peluso, Marco De Martino, Alessandro Egger, Reinhold Buccheri, Francesco |
| contents | We investigate the theory of surface plasmon polaritons on a magnetic Weyl semimetal conical tip. We show that the axion term in the effective electrodynamics modifies the surface plasmon polariton dispersion relation and allows all modes with a given sign of the orbital angular momentum to be focused at the end of the tip. This is in contrast with normal metals, in which only one mode can reach the end. We discuss how this orbital angular momentum nanofocusing expands the potential of technologies that use this degree of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_18503 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Angular-momentum-selective nanofocusing with Weyl semimetals Peluso, Marco De Martino, Alessandro Egger, Reinhold Buccheri, Francesco Mesoscale and Nanoscale Physics We investigate the theory of surface plasmon polaritons on a magnetic Weyl semimetal conical tip. We show that the axion term in the effective electrodynamics modifies the surface plasmon polariton dispersion relation and allows all modes with a given sign of the orbital angular momentum to be focused at the end of the tip. This is in contrast with normal metals, in which only one mode can reach the end. We discuss how this orbital angular momentum nanofocusing expands the potential of technologies that use this degree of freedom. |
| title | Angular-momentum-selective nanofocusing with Weyl semimetals |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2506.18503 |