Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect
Abstract Two conventional magneto-plasmonic (MP) structures are firstly superimposed with mirror symmetry to form a symmetric MP heterostructure. These two MP components are separated from each other by a noble metallic layer. The unique feature of this novel heterostructure is that both magneto-pla...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-54039-3 |
| _version_ | 1797274983685160960 |
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| author | Amene Rezaeian Mahmood Hosseini Farzad |
| author_facet | Amene Rezaeian Mahmood Hosseini Farzad |
| author_sort | Amene Rezaeian |
| collection | DOAJ |
| description | Abstract Two conventional magneto-plasmonic (MP) structures are firstly superimposed with mirror symmetry to form a symmetric MP heterostructure. These two MP components are separated from each other by a noble metallic layer. The unique feature of this novel heterostructure is that both magneto-plasmon modes of the up and down MP portions can be coupled as the spacer becomes thinner. This intertwining effect leads to appearance of a new peak in the angular transverse magneto-optical Kerr effect (TMOKE) curve of the heterostructure. This new peak which is reported for the first time in the TMOKE signal, is generally similar to plasmon induced transparency (PIT) phenomenon observed in plasmonic multilayered structures. We entitle this novel effect as “second resonance of TMOKE signal”. More importantly, the occurrence angle and magnitude of the second peak can be controlled by varying the thickness and material of separating layer between two MP parts. Also, the dispersion diagram of the heterostructure shows this coupling so that two branches convert into four branches by reducing the thickness of spacer. Furthermore, coupled oscillators model confirms emergence of the second peak in the TMOKE signal. These results can offer great promise for increasing sensitivity of conventional magneto-optical refractive index sensors. |
| first_indexed | 2024-03-07T15:07:52Z |
| format | Article |
| id | doaj.art-13acf248753245a6927fc87bccd5232f |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:07:52Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-13acf248753245a6927fc87bccd5232f2024-03-05T18:48:49ZengNature PortfolioScientific Reports2045-23222024-02-0114111410.1038/s41598-024-54039-3Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effectAmene Rezaeian0Mahmood Hosseini Farzad1Department of Physics, College of Sciences, Shiraz UniversityDepartment of Physics, College of Sciences, Shiraz UniversityAbstract Two conventional magneto-plasmonic (MP) structures are firstly superimposed with mirror symmetry to form a symmetric MP heterostructure. These two MP components are separated from each other by a noble metallic layer. The unique feature of this novel heterostructure is that both magneto-plasmon modes of the up and down MP portions can be coupled as the spacer becomes thinner. This intertwining effect leads to appearance of a new peak in the angular transverse magneto-optical Kerr effect (TMOKE) curve of the heterostructure. This new peak which is reported for the first time in the TMOKE signal, is generally similar to plasmon induced transparency (PIT) phenomenon observed in plasmonic multilayered structures. We entitle this novel effect as “second resonance of TMOKE signal”. More importantly, the occurrence angle and magnitude of the second peak can be controlled by varying the thickness and material of separating layer between two MP parts. Also, the dispersion diagram of the heterostructure shows this coupling so that two branches convert into four branches by reducing the thickness of spacer. Furthermore, coupled oscillators model confirms emergence of the second peak in the TMOKE signal. These results can offer great promise for increasing sensitivity of conventional magneto-optical refractive index sensors.https://doi.org/10.1038/s41598-024-54039-3 |
| spellingShingle | Amene Rezaeian Mahmood Hosseini Farzad Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect Scientific Reports |
| title | Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect |
| title_full | Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect |
| title_fullStr | Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect |
| title_full_unstemmed | Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect |
| title_short | Magneto-optical heterostructures with second resonance of transverse magneto-optical Kerr effect |
| title_sort | magneto optical heterostructures with second resonance of transverse magneto optical kerr effect |
| url | https://doi.org/10.1038/s41598-024-54039-3 |
| work_keys_str_mv | AT amenerezaeian magnetoopticalheterostructureswithsecondresonanceoftransversemagnetoopticalkerreffect AT mahmoodhosseinifarzad magnetoopticalheterostructureswithsecondresonanceoftransversemagnetoopticalkerreffect |