4.8 Article

Femtosecond Single-Shot Imaging of Nanoscale Ferromagnetic Order in Co/Pd Multilayers Using Resonant X-Ray Holography

Journal

PHYSICAL REVIEW LETTERS
Volume 108, Issue 26, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.267403

Keywords

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Funding

  1. U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-76SF00515]
  2. German Federal Ministry for Education and Research [BMBF-05K10KTB]
  3. DFG [SFB925]
  4. Excellence cluster Frontiers in Quantum Photon Science
  5. ETH Zurich
  6. CNRS via the PEPS SASELEX (Soutien aux activites scientifiques francaises autour des lasers a electrons libres emettant des rayons X)
  7. FCT, Portuguese Foundation for Science and Technology
  8. LCLS
  9. Stanford University through SIMES
  10. Lawrence Berkeley National Laboratory (LBNL)
  11. University of Hamburg through the BMBF priority program [FSP 301]
  12. Center for Free Electron Laser Science (CFEL)

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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 25 mJ/cm(2). Employing resonant spatially muliplexed x-ray holography results in a low imaging threshold of5 mJ/cm(2). 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.

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