Ultrafast spin dynamics in heterogeneous magnetic systems (A02)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 328545488

We propose to follow the dynamical pathways of the atomic magnetic moments set by ultrashort laser pulse excitation in materials with antiferromagnetically (AFM) coupled magnetic moments via magneto-optical spectroscopy in the extreme-ultraviolet spectral range (photon energy 20-200 eV). Methodologically, we will focus on the unique properties of resonant X-ray techniques to access element-specific magnetization dynamics with lateral and vertical spatial resolution. Our scientific goal is to use light to switch magnetic order on ultrafast time scales and on nanometer length scales, and to identify the microscopic processes that lead to the reversal of the magnetization direction in distinct sample geometries of rare earth/transition metals systems as well as in AFM/ferromagnetic bi- and multilayers.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 227: Ultrafast Spin Dynamics
• Applicant Institution: Freie Universität Berlin
• Project Heads: Professor Dr. Stefan Eisebitt; Dr. Clemens von Korff Schmising