Real-Time Formulation of Atomistic Electromagnetic Models for Plasmonics
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917695371345920 |
|---|---|
| author | Lafiosca, Piero Nicoli, Luca Pipolo, Silvio Corni, Stefano Giovannini, Tommaso Cappelli, Chiara |
| author_facet | Lafiosca, Piero Nicoli, Luca Pipolo, Silvio Corni, Stefano Giovannini, Tommaso Cappelli, Chiara |
| contents | Investigating nanoplasmonics using time-dependent approaches permits shedding light on the dynamic optical properties of plasmonic structures, which are intrinsically connected with their potential applications in photochemistry and photoreactivity. This work proposes a real-time extension of our recently developed fully atomistic approaches $ω$FQ and $ω$FQF$μ$. These methods successfully reproduce quantum size effects in metal nanoparticles, including plasmon shifts for both simple and $d$-metals, even below the quantum size limit. Also, thanks to their atomistic nature and the phenomenological inclusion of quantum tunneling effects, they can effectively describe the optical response of subnanometer junctions. By incorporating real-time dynamics, the approach provides an efficient framework for studying the time-dependent optical behavior of metal nanostructures, including the decoherence of plasmon excitations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_10926 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Real-Time Formulation of Atomistic Electromagnetic Models for Plasmonics Lafiosca, Piero Nicoli, Luca Pipolo, Silvio Corni, Stefano Giovannini, Tommaso Cappelli, Chiara Mesoscale and Nanoscale Physics Optics Investigating nanoplasmonics using time-dependent approaches permits shedding light on the dynamic optical properties of plasmonic structures, which are intrinsically connected with their potential applications in photochemistry and photoreactivity. This work proposes a real-time extension of our recently developed fully atomistic approaches $ω$FQ and $ω$FQF$μ$. These methods successfully reproduce quantum size effects in metal nanoparticles, including plasmon shifts for both simple and $d$-metals, even below the quantum size limit. Also, thanks to their atomistic nature and the phenomenological inclusion of quantum tunneling effects, they can effectively describe the optical response of subnanometer junctions. By incorporating real-time dynamics, the approach provides an efficient framework for studying the time-dependent optical behavior of metal nanostructures, including the decoherence of plasmon excitations. |
| title | Real-Time Formulation of Atomistic Electromagnetic Models for Plasmonics |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2406.10926 |