Physikalisches Kolloquium

Jan. 8, 2019 at 4 p.m. c.t. in HS KPH

Prof. Dr. Hans Jockers
Institut für Physik

Prof. Dr. Concettina Sfienti
Institut für Kernphysik

Ultrafast and very Small: Discover Nanoscale Magnetism With picosecond time resolution using X-Rays
Dr. Hendrik Ohldag (SLAC National Accelerator Laboratory, CA, USA)

The goal of this talk is to present an introduction to the field of synchrotron based soft x-ray microscopy, which is becoming a tool available at every synchrotron. Particular focus will be given to time resolved measurements by employing the pulsed nature of the synchrotron source providing x-ray flashes with 50 ps duration. The general introduction will be followed by a set of examples, that includes the visualization of spin injection from non-magnet into ferromagnets, spin wave modes in ferromagnetic resonance of structured samples and spin waves excited by spin-torque nano-oscillators.