Observation of magnetic helicoidal dichroism with extreme ultraviolet light vortices
Mauro Fanciulli
(1, 2)
,
Matteo Pancaldi
(3)
,
Emanuele Pedersoli
(3)
,
Mekha Vimal
(1)
,
David Bresteau
(1)
,
Martin Luttmann
(1)
,
Dario de Angelis
(3)
,
Primož Rebernik Ribič
(3)
,
Benedikt Rösner
(4)
,
Christian David
(4)
,
Carlo Spezzani
(3)
,
Michele Manfredda
(3)
,
Ricardo Sousa
(5)
,
Ioan-Lucian Prejbeanu
(5)
,
Laurent Vila
(5)
,
Bernard Diény
(5)
,
Giovanni de Ninno
(3, 6)
,
Flavio Capotondi
(3)
,
Maurizio Sacchi
(7, 8)
,
Thierry Ruchon
(1)
1
LIDyl -
Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
2 LPMS - Laboratoire de Physique des Matériaux et des Surfaces
3 Elettra Sincrotrone Trieste
4 PSI - Paul Scherrer Institute
5 SPINTEC - SPINtronique et TEchnologie des Composants
6 Laboratory of Quantum Optics
7 SSOLEIL - Synchrotron SOLEIL
8 INSP - Institut des Nanosciences de Paris
2 LPMS - Laboratoire de Physique des Matériaux et des Surfaces
3 Elettra Sincrotrone Trieste
4 PSI - Paul Scherrer Institute
5 SPINTEC - SPINtronique et TEchnologie des Composants
6 Laboratory of Quantum Optics
7 SSOLEIL - Synchrotron SOLEIL
8 INSP - Institut des Nanosciences de Paris
Matteo Pancaldi
- Function : Author
- PersonId : 791388
- ORCID : 0000-0002-4125-3157
Emanuele Pedersoli
- Function : Author
- PersonId : 774255
- ORCID : 0000-0003-0572-6735
David Bresteau
- Function : Author
- PersonId : 779784
- ORCID : 0000-0003-1183-0483
- IdRef : 196785731
Dario de Angelis
- Function : Author
- PersonId : 806562
- ORCID : 0000-0001-9199-6373
Benedikt Rösner
- Function : Author
- PersonId : 786335
- ORCID : 0000-0001-8765-5904
Christian David
- Function : Author
- PersonId : 755187
- ORCID : 0000-0002-7392-8892
- IdRef : 129749427
Ioan-Lucian Prejbeanu
- Function : Author
- PersonId : 172848
- IdHAL : ioan-lucian-prejbeanu
- ORCID : 0000-0001-6577-032X
- IdRef : 077624564
Laurent Vila
- Function : Author
- PersonId : 181305
- IdHAL : laurent-vila
- ORCID : 0000-0002-1171-2391
- IdRef : 081358180
Bernard Diény
- Function : Author
- PersonId : 183637
- IdHAL : bernard-dieny
- ORCID : 0000-0002-0575-5301
- IdRef : 091501474
Maurizio Sacchi
- Function : Author
- PersonId : 738378
- IdHAL : maurizio-sacchi
- ORCID : 0000-0002-3205-0796
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 the light phase chirality 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.