%0 Journal Article
%A Fognini, A.
%A Michlmayr, T. U.
%A Salvatella, G.
%A Wetli, C.
%A Ramsperger, U.
%A Bähler, T.
%A Sorgenfrei, F.
%A Beye, M.
%A Eschenlohr, A.
%A Pontius, N.
%A Stamm, C.
%A Hieke, Florian
%A Dell'Angela, M.
%A Jong, S. de
%A Kukreja, R.
%A Gerasimova, Natalia
%A Rybnikov, V.
%A Al-Shemmary, A.
%A Redlin, H.
%A Raabe, J.
%A Föhlisch, A.
%A Dürr, H. A.
%A Wurth, Wilfried
%A Pescia, D.
%A Vaterlaus, A.
%A Acremann, Y.
%T Ultrafast reduction of the total magnetization in iron
%J Applied physics letters
%V 104
%N 3
%@ 1077-3118
%C Melville, NY
%I American Institute of Physics
%M DESY-2014-02412
%P 032402
%D 2014
%X Surprisingly, if a ferromagnet is exposed to an ultrafast laser pulse, its apparent magnetization isreduced within less than a picosecond. Up to now, the total magnetization, i.e., the average spinpolarization of the whole valence band, was not detectable on a sub-picosecond time scale. Here,we present experimental data, confirming the ultrafast reduction of the total magnetization. Softx-ray pulses from the free electron laser in Hamburg (FLASH) extract polarized cascadephotoelectrons from an iron layer excited by a femtosecond laser pulse. The spin polarization ofthe emitted electrons is detected by a Mott spin polarimeter.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000330839700047
%R 10.1063/1.4862476
%U https://bib-pubdb1.desy.de/record/168203