Ultrafast Opto-magnetic Effects in the Extreme Ultraviolet Spectral Range
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.
Keywords
Cite
@article{arxiv.2303.08564,
title = {Ultrafast Opto-magnetic Effects in the Extreme Ultraviolet Spectral Range},
author = {Martin Hennecke and Clemens von Korff Schmising and Kelvin Yao and Emmanuelle Jal and Boris Vodungbo and Valentin Chardonnet and Katherine Légaré and Flavio Capotondi and Denys Naumenko and Emanuele Pedersoli and Ignacio Lopez-Quintas and Ivaylo P. Nikolov and Lorenzo Raimondi and Giovanni De Ninno and Leandro Salemi and Sergiu Ruta and Roy Chantrell and Thomas Ostler and Bastian Pfau and Dieter Engel and Peter M. Oppeneer and Stefan Eisebitt and Ilie Radu},
journal= {arXiv preprint arXiv:2303.08564},
year = {2024}
}