Since the discovery of electron-wave duality, electron scattering instrumentation has
developed into a powerful array of techniques for revealing the atomic structure of matter …

Realizing room-temperature magnetic skyrmions in two-dimensional van der Waals
ferromagnets offers unparalleled prospects for future spintronic applications. However, due …

We present the development of the first ultrafast transmission electron microscope (UTEM)
driven by localized photoemission from a field emitter cathode. We describe the …

In numerous functional materials, such as steels, ferroelectrics and magnets, new
functionalities can be achieved through the engineering of the domain structures, which are …

Topological states of matter exhibit fascinating physics combined with an intrinsic stability. A
key challenge is the fast creation of topological phases, which requires massive …

Merons are nontrivial topological spin textures highly relevant for many phenomena in solid
state physics. Despite their importance, direct observation of such vortex quasiparticles is …

We demonstrate that light-induced heat pulses of different duration and energy can write
Skyrmions in a broad range of temperatures and magnetic field in FeGe. Using a …

Novel time-resolved imaging techniques for the investigation of ultrafast nanoscale
magnetization dynamics are indispensable for further developments in light-controlled …

Sub-picosecond magnetisation manipulation via femtosecond optical pum** has attracted
wide attention ever since its original discovery in 1996. However, the spatial evolution of the …

We report a transient plasmonic spin skyrmion topological quasiparticle within surface
plasmon polariton vortices, which is described by analytical modeling and imaging of its …