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Observation of Magnetic Helicoidal Dichroism with Extreme Ultraviolet Light Vortices

Abstract : We report on the experimental evidence of magnetic helicoidal dichroism, observed in the interaction of an extreme ultraviolet vortex beam carrying orbital angular momentum with a magnetic vortex. Numerical simulations based on classical electromagnetic theory show that this dichroism is based on the interference of light modes with different orbital angular momenta, which are populated after the interaction between light and the magnetic topology. This observation gives insight into the interplay between orbital angular momentum and magnetism and sets the framework for the development of new analytical tools to investigate ultrafast magnetization dynamics
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Submitted on : Monday, March 7, 2022 - 1:27:51 PM
Last modification on : Wednesday, August 24, 2022 - 3:31:29 AM

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Mauro Fanciulli, Matteo Pancaldi, Emanuele Pedersoli, Mekha Vimal, David Bresteau, et al.. Observation of Magnetic Helicoidal Dichroism with Extreme Ultraviolet Light Vortices. Physical Review Letters, American Physical Society, 2022, 128 (7), pp.077401. ⟨10.1103/PhysRevLett.128.077401⟩. ⟨cea-03599713⟩

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