Observation of Magnetic Helicoidal Dichroism with Extreme Ultraviolet Light Vortices.

Autor: Fanciulli M; Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France.; Laboratoire de Physique des Matériaux et Surfaces, CY Cergy Paris Université, 95031 Cergy-Pontoise, France., Pancaldi M; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Pedersoli E; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Vimal M; Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France., Bresteau D; Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France., Luttmann M; Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France., De Angelis D; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Ribič PR; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Rösner B; Paul Scherrer Institut, 5232 Villigen-PSI, Switzerland., David C; Paul Scherrer Institut, 5232 Villigen-PSI, Switzerland., Spezzani C; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Manfredda M; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Sousa R; Université Grenoble Alpes, CNRS, CEA, Grenoble INP, IRIG-SPINTEC, 38000 Grenoble, France., Prejbeanu IL; Université Grenoble Alpes, CNRS, CEA, Grenoble INP, IRIG-SPINTEC, 38000 Grenoble, France., Vila L; Université Grenoble Alpes, CNRS, CEA, Grenoble INP, IRIG-SPINTEC, 38000 Grenoble, France., Dieny B; Université Grenoble Alpes, CNRS, CEA, Grenoble INP, IRIG-SPINTEC, 38000 Grenoble, France., De Ninno G; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy.; Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia., Capotondi F; Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy., Sacchi M; Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, 75005 Paris, France.; Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, B. P. 48, 91192 Gif-sur-Yvette, France., Ruchon T; Université Paris-Saclay, CEA, CNRS, LIDYL, 91191 Gif-sur-Yvette, France.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2022 Feb 18; Vol. 128 (7), pp. 077401.
DOI: 10.1103/PhysRevLett.128.077401
Abstrakt: 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.
Databáze: MEDLINE