Excitation and detection of coherent nanoscale spin waves via extreme ultraviolet transient gratings
The advent of free electron lasers has opened the opportunity to explore interactions between extreme ultraviolet (EUV) photons and collective excitations in solids. While EUV transient grating spectroscopy, a noncollinear four-wave mixing technique, has already been applied to probe coherent phonons, the potential of EUV radiation for studying nanoscale spin waves has not been harnessed. Here we report EUV transient grating experiments with coherent magnons in Fe/Gd ferrimagnetic multilayers. Magnons with tens of nanometers wavelengths are excited by a pair of femtosecond EUV pulses and detected via diffraction of a probe pulse tuned to an absorption edge of Gd. The results unlock the potential of nonlinear EUV spectroscopy for studying magnons and provide a tool for exploring spin waves in a wave vector range not accessible by established inelastic scattering techniques.
Authors
- Danny Fainozzi (ORCID: https://orcid.org/0000-0001-7380-8324)
- Peter R. Miedaner (ORCID: https://orcid.org/0000-0002-7221-5137)
- J.R. Deschamps (ORCID: https://orcid.org/0000-0002-8919-7561)
- Keith A. Nelson (ORCID: https://orcid.org/0000-0001-7804-5418)
- Filippo Bencivenga (ORCID: https://orcid.org/0000-0003-3929-5101)
- Laura Foglia (ORCID: https://orcid.org/0000-0002-2218-3886)
- Marta Brioschi (ORCID: https://orcid.org/0000-0002-5947-8557)
- Dmitriy Ksenzov (ORCID: https://orcid.org/0000-0002-0657-1678)
- G. Rossi (ORCID: https://orcid.org/0000-0002-9330-7436)
- A. A. Maznev (ORCID: https://orcid.org/0000-0002-5405-9900)
- Dieter Engel (ORCID: https://orcid.org/0000-0001-9255-9554)
- Daniel Schick (ORCID: https://orcid.org/0000-0001-7988-6489)
- Riccardo Mincigrucci (ORCID: https://orcid.org/0000-0001-6343-6256)
- Riccardo Comin (ORCID: https://orcid.org/0000-0002-1069-9973)
- Stefano Bonetti (ORCID: https://orcid.org/0000-0001-9352-2411)
- Riccardo Cucini (ORCID: https://orcid.org/0000-0001-8516-1409)
- Ettore Paltanin (ORCID: https://orcid.org/0009-0007-8490-5884)
- Christian Gutt (ORCID: https://orcid.org/0000-0002-0051-8542)
- Sergei Urazhdin (ORCID: https://orcid.org/0000-0002-6972-0300)
- Pietro Carrara (ORCID: https://orcid.org/0000-0002-1937-7591)
- Nupur N. Khatu (ORCID: https://orcid.org/0009-0008-4970-0549)
- Nadia Berndt (ORCID: https://orcid.org/0000-0001-9688-117X)
- Stefen Wittrock
Institutions
- University of Trieste (IT)
- Ca' Foscari University of Venice (IT)
- Emory University (US)
- Stockholm University (SE)
- University of Milan (IT)
- University of Siegen (DE)
- Folkwang University of the Arts (DE)
- Helmholtz-Zentrum Berlin für Materialien und Energie (DE)
- Elettra-Sincrotrone Trieste S.C.p.A. (IT)
- Istituto Officina dei Materiali (IT)
- Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (DE)
- Massachusetts Institute of Technology (US)
- European X-Ray Free-Electron Laser (DE)
Publication Details
- Journal
- Science Advances
- Published
- 2024-09-06
- DOI
- https://doi.org/10.1126/sciadv.adp6015
- Citations
- 9
- Primary Topic
- Advanced Electron Microscopy Techniques and Applications
- Type
- article
- Field-Weighted Citation Impact
- 4.70