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- W4287777603 abstract "Identifying and imaging spin textures of ever more complex magnetic structures has become a major challenge in the past decade, especially at ultrashort timescales. Most of current approaches are based on the analysis of their polarization and magnetization-dependent reflectivities. Based on our joint publication XXX XX XXXXXX, we introduce a different concept, centered on the coupling of magnetic structures with light beams carrying orbital angular momentum (OAM). Upon reflection by a magnetic vortex, an incoming beam with a unique value $ell$ of OAM gets enriched in the neighboring OAM modes $ellpm 1$. It results in anisotropic far-field images, which are identified as a Magnetic Helicoidal Dichroism (MHD) signal. Their analysis allow to retrieve the complex magneto-optical constants with excellent precision. This method, which does not require any polarization-resolved analysis, is promising for a quick identification of spin textures, including with attosecond to femtosecond time resolutions." @default.
- W4287777603 created "2022-07-26" @default.
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- W4287777603 date "2020-05-17" @default.
- W4287777603 modified "2023-09-29" @default.
- W4287777603 title "Magnetic helicoidal dichroism in reflection by magnetic vortices" @default.
- W4287777603 doi "https://doi.org/10.48550/arxiv.2005.08349" @default.
- W4287777603 hasPublicationYear "2020" @default.
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