Speaker
Description
Ultrafast magnetization dynamics is a complex and fascinating field in fundamental physics and motivates studies on new magnetic recording techniques based on, e.g., all-optical switching (AOS) of magnetic order [1,2]. For our studies on photo-induced magnetization dynamics in rare-earth metals [3,4] the FemtoSpex slicing beamline at BESSY II is ideal since magnetization can be probed state- and element-specific with a time-resolution of 130 fs. In order to push the research on ultrafast dynamics to a new level the BMBF-financed DynaMax project was initiated. This project is a collaboration between the HZB, MBI and FU Berlin to build up a complete new endstation for the slicing beamline. We will present details of this innovative setup and new feasibilities for future studies. The operation will start in summer 2018 and our planned investigations will benefit from high magnetic fields with variable orientation and high ramping rates. The new endstation will further realize simultaneous measurement of magnetic dynamics in transmission, scattering and holography, back-pump front-probe geometry, THz experiments and in-situ sample preparation of complex magnetic systems with molecular beam epitaxy and sputter deposition.
[1] T. A. Ostler et al., Nat. Commun. 3, 666 (2012).
[2] I. Radu et al., Nature 472, 205 (2011).
[3] M. Wietstruk et al., Phys. Rev. Lett. 106, 127401 (2011).
[4] K. Bobowski et al., J. Phys.: Condens. Matter 29, 234003 (2017).
