Surface Plasmons in the Continuum
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866910126238072832 |
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| author | Chaudhary, Mohit Weissker, Hans-Christian Toffoli, Daniele Stener, Mauro Despré, Victor Rabilloud, Franck Lermé, Jean Sinha-Roy, Rajarshi |
| author_facet | Chaudhary, Mohit Weissker, Hans-Christian Toffoli, Daniele Stener, Mauro Despré, Victor Rabilloud, Franck Lermé, Jean Sinha-Roy, Rajarshi |
| contents | The interest to foster plasmonic applications at energies in the ultra-violet, has escalated research initiatives in clusters of unconventional plasmonic materials like aluminum and indium,for which the surface-plasmon resonance appears above the ionization potential. Naturally, the quantum mechanical description calls for the incorporation of the ionization process, thereby making the ab initio calculations challenging. We present a robust approach within the time-evolution formalism of the time-dependent density-functional theory to calculate surface plasmon resonance in the continuum of metal clusters. Using the much studied Al$_{13}^-$ as a system of reference, we show that accurate description of the continuum and of the ionization of the cluster allow to capture a broad surface-plasmon in the UV. Application of this approach in aluminum clusters has given the size-dependent evolution from discrete spectral features in Al$_{6}$ to the surface-plasmon in larger clusters in the deep ultra-violet. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_12008 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Surface Plasmons in the Continuum Chaudhary, Mohit Weissker, Hans-Christian Toffoli, Daniele Stener, Mauro Despré, Victor Rabilloud, Franck Lermé, Jean Sinha-Roy, Rajarshi Chemical Physics Other Condensed Matter The interest to foster plasmonic applications at energies in the ultra-violet, has escalated research initiatives in clusters of unconventional plasmonic materials like aluminum and indium,for which the surface-plasmon resonance appears above the ionization potential. Naturally, the quantum mechanical description calls for the incorporation of the ionization process, thereby making the ab initio calculations challenging. We present a robust approach within the time-evolution formalism of the time-dependent density-functional theory to calculate surface plasmon resonance in the continuum of metal clusters. Using the much studied Al$_{13}^-$ as a system of reference, we show that accurate description of the continuum and of the ionization of the cluster allow to capture a broad surface-plasmon in the UV. Application of this approach in aluminum clusters has given the size-dependent evolution from discrete spectral features in Al$_{6}$ to the surface-plasmon in larger clusters in the deep ultra-violet. |
| title | Surface Plasmons in the Continuum |
| topic | Chemical Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2604.12008 |