Observation of Magnetic Helicoidal Dichroism with Extreme Ultraviolet Light Vortices - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Physical Review Letters Year : 2022

Observation of Magnetic Helicoidal Dichroism with Extreme Ultraviolet Light Vortices

Matteo Pancaldi
Emanuele Pedersoli
Mekha Vimal
  • Function : Author
David Bresteau
Martin Luttmann
  • Function : Author
Dario de Angelis
Benedikt Rösner
Christian David
Laurent Vila
Bernard Diény
Thierry Ruchon
  • Function : Author

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

Dates and versions

cea-03599713 , version 1 (07-03-2022)

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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, 2022, 128 (7), pp.077401. ⟨10.1103/PhysRevLett.128.077401⟩. ⟨cea-03599713⟩
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