High Magnetic Field Magneto-optics on Plasmonic Silica-Embedded Silver Nanoparticles
| Autor: | Alessio Gabbani, Giulio Campo, Valentina Bonanni, Peter van Rhee, Gregorio Bottaro, César de Julián Fernández, Valentina Bello, Elvira Fantechi, Francesco Biccari, Massimo Gurioli, Lidia Armelao, Claudio Sangregorio, Giovanni Mattei, Peter Christianen, Francesco Pineider |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Soft Condensed Matter & Nanomaterials (HFML)
Metal nanoparticles Metals Gold Plasmonics Magnetic properties General Energy Soft Condensed Matter and Nanomaterials Physics::Optics Plasmonics High magnetic fields Silica Physical and Theoretical Chemistry Silver nanoparticles Surfaces Coatings and Films Electronic Optical and Magnetic Materials |
| Zdroj: | Journal of physical chemistry. C 126 (2022): 1939–1945. doi:10.1021/acs.jpcc.1c09900 info:cnr-pdr/source/autori:Gabbani A.; Campo G.; Bonanni V.; Van Rhee P.; Bottaro G.; De Julian Fernandez C.; Bello V.; Fantechi E.; Biccari F.; Gurioli M.; Armelao L.; Sangregorio C.; Mattei G.; Christianen P.; Pineider F./titolo:High Magnetic Field Magneto-optics on Plasmonic Silica-Embedded Silver Nanoparticles/doi:10.1021%2Facs.jpcc.1c09900/rivista:Journal of physical chemistry. C/anno:2022/pagina_da:1939/pagina_a:1945/intervallo_pagine:1939–1945/volume:126 Journal of Physical Chemistry C, 126, 4, pp. 1939-1945 Journal of Physical Chemistry C, 126, 1939-1945 |
| ISSN: | 1932-7447 |
| DOI: | 10.1021/acs.jpcc.1c09900 |
| Popis: | Tuning the plasmonic response with an external magnetic field is extremely promising to achieve active magnetoplasmonic devices, such as next generation refractometric sensors or tunable optical components. Noble metal nanostructures represent an ideal platform for studying and modeling magnetoplasmonic effects through the interaction of free electrons with external magnetic fields, even though their response is relatively low at the magnetic field intensities commonly applied in standard magneto-optical spectroscopies. Here we demonstrate a large magnetoplasmonic response of silver nanoparticles by performing magnetic circular dichroism spectroscopy at high magnetic fields, revealing a linear response to the magnetic field up to 30 T. The exploitation of such high fields allowed us to probe directly the field-induced splitting of circular plasmonic modes by performing absorption spectra with static circular polarizations, giving direct experimental evidence that the magneto-optical activity of plasmonic nanoparticles arises from the energy shift of field-split circular magnetoplasmonic modes. |
| Databáze: | OpenAIRE |
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