Competition between surface screening and size quantization for surface plasmons in nanoparticles
We present a theoretical model for analyzing the size dependence of the surface plasmon resonance of metallic nanospheres in a range of sizes down to a single nanometer. Within this model, we explicitly show how different microscopic mechanisms, namely quantization due to size (quantum size effect (...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/8/083044 |
| _version_ | 1797751463365050368 |
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| author | R Carmina Monreal Tomasz J Antosiewicz S Peter Apell |
| author_facet | R Carmina Monreal Tomasz J Antosiewicz S Peter Apell |
| author_sort | R Carmina Monreal |
| collection | DOAJ |
| description | We present a theoretical model for analyzing the size dependence of the surface plasmon resonance of metallic nanospheres in a range of sizes down to a single nanometer. Within this model, we explicitly show how different microscopic mechanisms, namely quantization due to size (quantum size effect (QSE)) and dynamical surface screening, affect the energy of the surface plasmon. We demonstrate that the latter mechanism, which can move the surface plasma energy both toward the red or the blue, can be comparable to or even stronger than QSE. Thus, depending on material parameters, QSE may only be observed for ultra-small metal nanoparticles much closer to 1 nm in size than to 10 nm. Results presented herein are in quantitative agreement with recent published experimental results for Ag and Au. |
| first_indexed | 2024-03-12T16:48:56Z |
| format | Article |
| id | doaj.art-c17165905bf64da589dfe18cc27f0d21 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:48:56Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c17165905bf64da589dfe18cc27f0d212023-08-08T11:26:16ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115808304410.1088/1367-2630/15/8/083044Competition between surface screening and size quantization for surface plasmons in nanoparticlesR Carmina Monreal0Tomasz J Antosiewicz1S Peter Apell2Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid , E-28049 Madrid, SpainDepartment of Applied Physics and Gothenburg Physics Centre, Chalmers University of Technology , SE-41296 Göteborg, SwedenDepartment of Applied Physics and Gothenburg Physics Centre, Chalmers University of Technology , SE-41296 Göteborg, SwedenWe present a theoretical model for analyzing the size dependence of the surface plasmon resonance of metallic nanospheres in a range of sizes down to a single nanometer. Within this model, we explicitly show how different microscopic mechanisms, namely quantization due to size (quantum size effect (QSE)) and dynamical surface screening, affect the energy of the surface plasmon. We demonstrate that the latter mechanism, which can move the surface plasma energy both toward the red or the blue, can be comparable to or even stronger than QSE. Thus, depending on material parameters, QSE may only be observed for ultra-small metal nanoparticles much closer to 1 nm in size than to 10 nm. Results presented herein are in quantitative agreement with recent published experimental results for Ag and Au.https://doi.org/10.1088/1367-2630/15/8/083044 |
| spellingShingle | R Carmina Monreal Tomasz J Antosiewicz S Peter Apell Competition between surface screening and size quantization for surface plasmons in nanoparticles New Journal of Physics |
| title | Competition between surface screening and size quantization for surface plasmons in nanoparticles |
| title_full | Competition between surface screening and size quantization for surface plasmons in nanoparticles |
| title_fullStr | Competition between surface screening and size quantization for surface plasmons in nanoparticles |
| title_full_unstemmed | Competition between surface screening and size quantization for surface plasmons in nanoparticles |
| title_short | Competition between surface screening and size quantization for surface plasmons in nanoparticles |
| title_sort | competition between surface screening and size quantization for surface plasmons in nanoparticles |
| url | https://doi.org/10.1088/1367-2630/15/8/083044 |
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