Year: 2023
Type: preprint
Abstract: We present the generation of transient polarization gratings at the nanoscale, achieved using a tailored accelerator configuration of the FERMI free electron laser. We demonstrate the capabilities of such a transient polarization grating by comparing its induced dynamics with the ones triggered by a more conventional intensity grating on a thin film ferrimagnetic alloy. While the signal of the intensity grating is dominated by the thermoelastic response of the system, such a contribution is suppressed in the case of the polarization grating. This exposes helicity-dependent magnetization dynamics that have so-far remained hidden under the large thermally driven response. We anticipate nanoscale transient polarization gratings to become useful for the study of any physical, chemical and biological systems possessing chiral symmetry.
Source: arXiv (Cornell University)
Authors: Foglia, Laura, Wehinger, Björn, Perosa, Giovanni, Mincigrucci, Riccardo, Allaria, Enrico, Armillotta, Francesco, Brynes, Alexander, Cucini, Riccardo, De Angelis, Dario, De Ninno, Giovanni, Engel, W. Dieter, Fainozzi, Danny, Giannessi, Luca, Khatu, Nupur N., Laterza, Simone, Paltanin, Ettore, Pelli-Cresi, Jacopo Stefano, Penco, Giuseppe, Puntel, Denny, Ribič, Primož Rebernik, Sottocorona, Filippo, Trovò, Mauro, Schmising, Clemens von Korff, Yao, Kelvin, Masciovecchio, Claudio, Bonetti, Stefano, Bencivenga, Filippo
Institutions: Elettra-Sincrotrone Trieste S.C.p.A., University of Trieste, École Polytechnique Fédérale de Lausanne, AREA Science Park, Istituto Officina dei Materiali, National Research Council, University of Nova Gorica, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Ca' Foscari University of Venice
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4387947477