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Multi-Color Imaging of Magnetic Co/Pt Multilayers

Weder, David; Korff Schmising, Clemens von; Willems, Felix; Günther, Christian M.; Schneider, Michael; Pfau, Bastian; Merhe, A.; Jal, Emmanuelle; Vodungbo, Boris; Lüning, Jan; Mahieu, B.; Capotondi, F.; Pedersoli, Emanuele; Eisebitt, Stefan

FG Röntgenoptik und Nanometer-Optik

We demonstrate for the first time the realization of a spatial resolved two color, element-specific imaging experiment at the free-electron laser facility FERMI. Coherent imaging using Fourier transform holography was used to achieve direct real space access to the nanometer length scale of magnetic domains of Co/Pt heterostructures via the element-specific magnetic dichroism in the extreme ultraviolet spectral range. As a first step to implement this technique for studies of ultrafast phenomena we present the spatially resolved response of magnetic domains upon femtosecond laser excitation.