Ultrafast optical demagnetization manipulates nanoscale spin structure in domain walls

@inproceedings{Pfau2012UltrafastOD,
  title={Ultrafast optical demagnetization manipulates nanoscale spin structure in domain walls},
  author={Bastian Pfau and Stefan Schaffert and Lothar M{\"u}ller and Carsten Gutt and A. Al-Shemmary and Felix B{\"u}ttner and Renaud Delaunay and Stefan D{\"u}sterer and Samuel Flewett and Robert Fr{\"o}mter and Jan Geilhufe and Erik Guehrs and C. M. G{\"u}nther and Ranjit R Hawaldar and Markus Hille and Nicolas Jaouen and Andr{\'e} Kobs and Kaigong Li and J. Mohanty and Harald Redlin and W. Schlotter and Daniel Stickler and Rolf Treusch and Boris Vodungbo and Mathias Kl{\"a}ui and H. P. Oepen and J. L{\"u}ning and G. Gr{\"u}bel and Stefan Eisebitt},
  booktitle={Nature communications},
  year={2012}
}
During ultrafast demagnetization of a magnetically ordered solid, angular momentum has to be transferred between the spins, electrons, and phonons in the system on femto- and picosecond timescales. Although the intrinsic spin-transfer mechanisms are intensely debated, additional extrinsic mechanisms arising due to nanoscale heterogeneity have only recently entered the discussion. Here we use femtosecond X-ray pulses from a free-electron laser to study thin film samples with magnetic domain… CONTINUE READING
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