TY  - JOUR
AU  - Fognini, A.
AU  - Michlmayr, T. U.
AU  - Salvatella, G.
AU  - Wetli, C.
AU  - Ramsperger, U.
AU  - Bähler, T.
AU  - Sorgenfrei, F.
AU  - Beye, M.
AU  - Eschenlohr, A.
AU  - Pontius, N.
AU  - Stamm, C.
AU  - Hieke, Florian
AU  - Dell'Angela, M.
AU  - Jong, S. de
AU  - Kukreja, R.
AU  - Gerasimova, Natalia
AU  - Rybnikov, V.
AU  - Al-Shemmary, A.
AU  - Redlin, H.
AU  - Raabe, J.
AU  - Föhlisch, A.
AU  - Dürr, H. A.
AU  - Wurth, Wilfried
AU  - Pescia, D.
AU  - Vaterlaus, A.
AU  - Acremann, Y.
TI  - Ultrafast reduction of the total magnetization in iron
JO  - Applied physics letters
VL  - 104
IS  - 3
SN  - 1077-3118
CY  - Melville, NY
PB  - American Institute of Physics
M1  - DESY-2014-02412
SP  - 032402
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000330839700047
DO  - DOI:10.1063/1.4862476
UR  - https://bib-pubdb1.desy.de/record/168203
ER  -