title: Breakdown of the x-ray resonant magnetic scattering signal during intense pulses of extreme ultraviolet free-electron-laser radiation.
abstract: We present results of single-shot resonant magnetic scattering experiments of Co/Pt multilayer systems using 100 fs long ultraintense pulses from an extreme ultraviolet (XUV) free-electron laser. An x-ray-induced breakdown of the resonant magnetic scattering channel during the pulse duration is observed at fluences of 5  J/cm(2). Simultaneously, the speckle contrast of the high-fluence scattering pattern is significantly reduced. We performed simulations of the nonequilibrium evolution of the Co/Pt multilayer system during the XUV pulse duration. We find that the electronic state of the sample is strongly perturbed during the first few femtoseconds of exposure leading to an ultrafast quenching of the resonant magnetic scattering mechanism.
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Müller
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Gutt
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Pfau
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Schaffert
authors.affiliation: Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Geilhufe
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Büttner
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Mohanty
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Flewett
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Treusch
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Düsterer
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Redlin
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Al-Shemmary
authors.affiliation: Institut für Angewandte Physik, Universität Hamburg, 20355 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Hille
authors.affiliation: Institut für Angewandte Physik, Universität Hamburg, 20355 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Kobs
authors.affiliation: Institut für Angewandte Physik, Universität Hamburg, 20355 Hamburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Frömter
authors.affiliation: Institut für Angewandte Physik, Universität Hamburg, 20355 Hamburg, Germany.
authors.forename: H P
authors.initials: HP
authors.lastname: Oepen
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany and Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany and Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Ziaja
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Medvedev
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany.
authors.forename: S-K
authors.initials: SK
authors.lastname: Son
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Thiele
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany and Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany and I. Institut für Theoretische Physik, Universität Hamburg, 20355 Hamburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Santra
authors.affiliation: Laboratoire de Chimie Physique Matière et Rayonnement-CNRS UMR 7614, Université Pierre et Marie Curie, 75005 Paris, France.
authors.forename: B
authors.initials: B
authors.lastname: Vodungbo
authors.affiliation: Laboratoire de Chimie Physique Matière et Rayonnement-CNRS UMR 7614, Université Pierre et Marie Curie, 75005 Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Lüning
authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany and Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Eisebitt
authors.affiliation: Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Grübel