| Paper Abstract and Keywords |
| Presentation |
2022-10-28 09:15
Tunable magneto-optical effect coupled to nanoantenna
Shunsuke Murai, Feifei Zhang, Katsuhisa Tanaka (Kyoto-U.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
The enhancement of the magneto-optical (MO) effect through the combination of plasmonic nanostructures and magnetic materials has exclusively used noble metals as plasmonic metals. As a result, the green-red part of the visible spectrum was enhanced, but no enhancement was observed in the blue or near-ultraviolet region. In this study, we fabricated a diffractive hexagonal nanoantenna composed of Al nanoparticles (NPs) with a 7.5 nm thin ferromagnetic film and achieved enhanced Faraday rotation in the blue-to-green range of visible light. Controlling the enhancement region over the entire visible range from 350 to 800 nm was also demonstrated by modifying the lattice constant and dielectric environment of the plasmonic nanostructures. In particular, in the blue range, we obtained a maximum rotation angle of 0.57° at 410 nm and a wide enhancement region of ~0.5° from 400–500 nm. Furthermore, the maximum rotation angle was shown by adjusting the dielectric environment to a higher refractive index medium. The present results demonstrate the potential of Al-based magnetoplasmonic effects, offering an opportunity to extend the MO spectral response from the visible range to the ultraviolet-blue range. We also report the comparison with non-plasmonic Si nanoantennas and the enhancement of Faraday rotation by our developed “nanoantenna sticker”. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Aluminum / magneto-plasmonics / Faraday rotation / / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 46, no. 32, MMS2022-42, pp. 29-33, Oct. 2022. |
| Paper # |
MMS2022-42 |
| Date of Issue |
2022-10-20 (MMS) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-MRIS MMS IEICE-CPM |
| Conference Date |
2022-10-27 - 2022-10-28 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Shinshu Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Spintronics, Solid State Memory, etc. |
| Paper Information |
| Registration To |
MMS |
| Conference Code |
2022-10-MRIS-MMS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Tunable magneto-optical effect coupled to nanoantenna |
| Sub Title (in English) |
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| Keyword(1) |
Aluminum |
| Keyword(2) |
magneto-plasmonics |
| Keyword(3) |
Faraday rotation |
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| 1st Author's Name |
Shunsuke Murai |
| 1st Author's Affiliation |
Kyoto University (Kyoto-U.) |
| 2nd Author's Name |
Feifei Zhang |
| 2nd Author's Affiliation |
Kyoto University (Kyoto-U.) |
| 3rd Author's Name |
Katsuhisa Tanaka |
| 3rd Author's Affiliation |
Kyoto University (Kyoto-U.) |
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| Speaker |
Author-1 |
| Date Time |
2022-10-28 09:15:00 |
| Presentation Time |
25 minutes |
| Registration for |
MMS |
| Paper # |
MMS2022-42 |
| Volume (vol) |
vol.46 |
| Number (no) |
no.32 |
| Page |
pp.29-33 |
| #Pages |
5 |
| Date of Issue |
2022-10-20 (MMS) |
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