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Pump–probe x-ray microscopy of photo-induced magnetization dynamics at MHz repetition rates
- Source :
- Structural Dynamics, Vol 10, Iss 2, Pp 024301-024301-8 (2023)
- Publication Year :
- 2023
- Publisher :
- AIP Publishing LLC and ACA, 2023.
-
Abstract
- We present time-resolved scanning x-ray microscopy measurements with picosecond photo-excitation via a tailored infrared pump laser at a scanning transmission x-ray microscope. Specifically, we image the laser-induced demagnetization and remagnetization of thin ferrimagnetic GdFe films proceeding on a few nanoseconds timescale. Controlling the heat load on the sample via additional reflector and heatsink layers allows us to conduct destruction-free measurements at a repetition rate of 50 MHz. Near-field enhancement of the photo-excitation and controlled annealing effects lead to laterally heterogeneous magnetization dynamics which we trace with 30 nm spatial resolution. Our work opens new opportunities to study photo-induced dynamics on the nanometer scale, with access to picosecond to nanosecond time scales, which is of technological relevance, especially in the field of magnetism.
- Subjects :
- Crystallography
QD901-999
Subjects
Details
- Language :
- English
- ISSN :
- 23297778
- Volume :
- 10
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Structural Dynamics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.75e6eb0db894a65b36a3954fa0fe1d4
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/4.0000167