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Ultrafast element- and depth-resolved magnetization dynamics probed by transverse magneto-optical Kerr effect spectroscopy in the soft x-ray range
- Source :
- Physical Review Research, Vol 4, Iss 2, p L022062 (2022)
- Publication Year :
- 2022
- Publisher :
- American Physical Society, 2022.
-
Abstract
- We report on time- and angle-resolved transverse magneto-optical Kerr effect spectroscopy in the soft x-ray range that, by analysis via polarization-dependent magnetic scattering simulations, allows us to determine the spatiotemporal and element-specific evolution of femtosecond laser-induced spin dynamics in nanostructured magnetic materials. In a ferrimagnetic GdFe thin-film system, we correlate a reshaping spectrum of the magneto-optical Kerr signal to depth-dependent magnetization dynamics and disentangle contributions due to nonequilibrium electron transport and nanoscale heat diffusion on their intrinsic timescales. Our Letter provides a quantitative insight into light-driven spin dynamics occurring at buried interfaces of complex magnetic heterostructures, which can be tailored and functionalized for future optospintronic devices.
Details
- Language :
- English
- ISSN :
- 26431564
- Volume :
- 4
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Physical Review Research
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.bacc17ab6f6f4172b59f8191cead6b6d
- Document Type :
- article
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.4.L022062