Résumé
We present the first single-shot images of ferromagnetic, nanoscale spin order taken with femtosecond x-ray pulses. X-ray-induced electron and spin dynamics can be outrun with pulses shorter than 80 fs in the investigated fluence regime, and no permanent aftereffects in the samples are observed below a fluence of 25mJ/cm2. Employing resonant spatially muliplexed x-ray holography results in a low imaging threshold of 5mJ/cm2. Our results open new ways to combine ultrafast laser spectroscopy with sequential snapshot imaging on a single sample, generating a movie of excited state dynamics.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 267403 |
| journal | Physical Review Letters |
| Volume | 108 |
| Numéro de publication | 26 |
| Les DOIs | |
| état | Publié - 27 juin 2012 |
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