Microscopic probes of critical spin fluctuations in 2D magnets (B03)

• Subject Area: Theoretical Condensed Matter Physics
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 425217212

The goal of this project is to explore the intrinsic role of spin fluctuations in novel 2D oxide materials, which are now emerging as exciting alternatives to the 'classical' 2D van der Waals systems. Advanced crystal engineering is employed to generate 2D magnetism in layered and freestanding FexOy systems. Using complementary magnetic microscopy probes, the goal is to pinpoint their spatial and temporal characteristics, to image the critical spin fluctuations at magnetic phase transitions and to assess their emergence as a decisive criterion for 2D-type magnetic ordering. Efforts will be focused on unravelling the microscopic mechanisms underlying the stochastic spin phenomena in 2D magnetic solids.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1432: Fluctuations and Nonlinearities in Classical and Quantum Matter beyond Equilibrium
• Major Instrumentation: Low-temperature magneto-optical Kerr microscope
• Instrumentation Group: 5040 Spezielle Mikroskope (außer 500-503)
• Applicant Institution: Universität Konstanz
• Project Head: Professorin Dr. Martina Müller