Spin dynamics in atomically-precise nanostructures (B05)

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

This project aims at resolving and understanding ultrafast dynamics of excited spin and correlated states at the atomic scale. We have set up a source of terahertz pulses and optical pulses and coupled them into a low-temperature scanning tunneling microscope. Using this technique, we will investigate the spin dynamics of single atoms and magnetic nanostructures on surfaces and resolve how spin dynamics are influenced by exchange couplings within atomic nanostructures and by charge-density modulations in the substrate (work package 1). Furthermore, we will investigate coherent excitations in different correlated materials, such as ferromagnets, antiferromagnets and Mott insulators (work package 2). Our results are expected to give valuable insights into competing interactions and time scales of excited states. This knowledge is indispensable for the manipulation and coherent control of spin states at the atomic scale.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 227: Ultrafast Spin Dynamics
• Applicant Institution: Freie Universität Berlin
• Project Heads: Professorin Dr. Katharina Franke; Professor Dr. Tobias Kampfrath