Multi-Color Imaging of Magnetic Co/Pt Multilayers

David Weder (1) , Clemens von Korff Schmising (1) , Felix Willems (1) , Christian Günther (2) , Michael Schneider (1) , Bastian Pfau (1) , Alaa El Din Merhe (3) , Emmanuelle Jal (3) , Boris Vodungbo (3) , Jan Lüning (3) , Benoit Mahieu (4) , Flavio Capotondi (5) , Emanuele Pedersoli (5) , Stefan Eisebitt (1)

1 MBI - Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
2 TU - Technische Universität Berlin
3 LCPMR - Laboratoire de Chimie Physique - Matière et Rayonnement
4 LOA - Laboratoire d'optique appliquée
5 Elettra Sincrotrone Trieste

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.

Keywords: Co/Pt; demagnetization; free-electron lasers (FEL); holography; magnetic domains; magnetic multilayers; perpendicular magnetic anisotropy; X-ray magnetic circular dichroism (XMCD)

Domains: Physics [physics]; Condensed Matter [cond-mat]

David Weder, Clemens von Korff Schmising, Felix Willems, Christian Günther, Michael Schneider, et al.. Multi-Color Imaging of Magnetic Co/Pt Multilayers. IEEE Transactions on Magnetics, 2017, 53 (11), pp.6500905. ⟨10.1109/TMAG.2017.2699560⟩. ⟨hal-03956511⟩