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Ultrafast opto-magnetic effects in the extreme ultraviolet spectral range.
- Source :
-
Communications Physics . 6/14/2024, Vol. 7 Issue 1, p1-8. 8p. - Publication Year :
- 2024
-
Abstract
- Coherent light-matter interactions mediated by opto-magnetic phenomena like the inverse Faraday effect (IFE) are expected to provide a non-thermal pathway for ultrafast manipulation of magnetism on timescales as short as the excitation pulse itself. As the IFE scales with the spin-orbit coupling strength of the involved electronic states, photo-exciting the strongly spin-orbit coupled core-level electrons in magnetic materials appears as an appealing method to transiently generate large opto-magnetic moments. Here, we investigate this scenario in a ferrimagnetic GdFeCo alloy by using intense and circularly polarized pulses of extreme ultraviolet radiation. Our results reveal ultrafast and strong helicity-dependent magnetic effects which are in line with the characteristic fingerprints of an IFE, corroborated by ab initio opto-magnetic IFE theory and atomistic spin dynamics simulations. Coherent light-matter interactions mediated by opto-magnetic phenomena like the inverse Faraday effect are expected to provide a non-thermal pathway for ultrafast manipulation of magnetism. The authors use intense and circularly polarized pulses of extreme ultraviolet radiation to induce particularly strong effects in a ferrimagnetic GdFeCo alloy. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23993650
- Volume :
- 7
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Communications Physics
- Publication Type :
- Academic Journal
- Accession number :
- 177898176
- Full Text :
- https://doi.org/10.1038/s42005-024-01686-7