Spin-lattice coupling on ultrafast time scales (A10)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 328545488

The project investigates ultrafast spin-lattice coupling, focusing on the transfer of energy and angular momentum between spins and phonons in magnetic materials. Using ultrafast electron and X-ray diffraction alongside magneto-optical techniques, it studies both high- and low-energy excitations. A central goal is to resolve the role of circularly polarized phonons in demagnetization and their transport across heterostructures. Key materials include 2D van der Waals magnets, magnetic oxides, transition metals, rare-earths and their alloys. The project explores spin manipulation via tailored THz strain and shear waves, targeting applications in ultrafast spintronics.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 227: Ultrafast Spin Dynamics
• Applicant Institution: Freie Universität Berlin
• Project Heads: Professor Dr. Matias Bargheer; Professor Dr. Ralph Ernstorfer; Dr. Yoav William Windsor, until 12/2025