Hermann Dürr

Hermann Dürr is a Professor in the Department of Physics and Astronomy at Uppsala University, Sweden, affiliated with the FREIA facility. His research employs ultrashort (10^-15 sec) laser, x-ray, and electron spectroscopies to probe condensed matter systems, with emphasis on speed limits for magnetic/electronic switching in information technology materials.

His primary research interests include:

• Ultrafast non-equilibrium and metastable states in condensed matter
• All-optical magnetic switching in ferrimagnets
• Insulator-metal transitions in correlated electron systems
• Ultrafast charge separation in photovoltaics
• Femtosecond soft x-ray and EUV spectroscopy techniques
• Relativistic electron pulses for structural dynamics

Analysis of his 2024-2025 publications reveals dominant themes in ultrafast magnetism, particularly element-specific dynamics in FePt and Co/Pd systems using free electron lasers. Key methodologies include circularly polarized x-rays, spin-resolved spectroscopy, and nanoscale imaging of magnetic domain manipulation, with strong focus on non-thermal metastable states relevant to next-generation information storage.

Professor Dürr maintains active collaborations with external research groups and industry partners to access advanced materials. His work is conducted through Uppsala University's FREIA facility, leveraging high-harmonic generation sources and free electron laser infrastructure for cutting-edge ultrafast experiments across condensed matter physics.