@article{DeckerBornBuechneretal.2019,
  author    = {Decker, R{\´e}gis and Born, Artur and B{\"u}chner, Robby and Ruotsalainen, Kari and Str{\aa}hlman, Christian and Neppl, Stefan and Haverkamp, Robert and Pietzsch, Annette and F{\"o}hlisch, Alexander},
  title     = {Measuring the atomic spin-flip scattering rate by x-ray emission spectroscopy},
  series = {Scientific reports},
  volume    = {9},
  journal   = {Scientific reports},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {2045-2322},
  doi       = {10.1038/s41598-019-45242-8},
  pages     = {6},
  year      = {2019},
  abstract  = {While extensive work has been dedicated to the measurement of the demagnetization time following an ultra-short laser pulse, experimental studies of its underlying microscopic mechanisms are still scarce. In transition metal ferromagnets, one of the main mechanism is the spin-flip of conduction electrons driven by electron-phonon scattering. Here, we present an original experimental method to monitor the electron-phonon mediated spin-flip scattering rate in nickel through the stringent atomic symmetry selection rules of x-ray emission spectroscopy. Increasing the phonon population leads to a waning of the 3d -> 2p(3/2) decay peak intensity, which reflects an increase of the angular momentum transfer scattering rate attributed to spin-flip. We find a spin relaxation time scale in the order of 50 fs in the 3d-band of nickel at room temperature, while consistantly, no such peak evolution is observed for the diamagnetic counterexample copper, using the same method.},
  language  = {en}
}